Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0090845d6cb2808…

MALICIOUS

PDF

79.6 KB Created: 2021-09-04 10:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b6a515e2f835456cafb4f4856c9296ae SHA-1: 8dd958ca0a5b291a8d2cd6db8a5802091929173b SHA-256: d0090845d6cb2808129c9dff44dd4b8f0ac21c6c8c401baa0e2cce1af2bd0926
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or malware distribution lure. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of multiple compromised CMS upload links and disposable hosting reinforces its role in a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c8eb69d1f---24407525738.pdf In PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610a4c087ca77---99799973279.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/161105376d7dae---nosorinowazopukogetiviju.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16115272e0eaa9---13655246945.pdfPDF link annotation
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/oesmdesco5rtvk59aehtiq0ro6/zumewef.pdfIn PDF document text
    • https://gites-les-bardots.com/userfiles/file/tilufazojemunuziram.pdfIn PDF document text
    • https://aashianarealty.com/file/15681663765.pdfIn PDF document text
    • https://brs.jo/userfiles/files/jofubibivezebojusifuji.pdfIn PDF document text
    • https://chinese-wall.tw/upload/files/bukukakefepij.pdfIn PDF document text
    • http://www.amanuttarakhand.org/ckfinder/userfiles/files/13171950685.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c54b757b6bd---gopewisifuzeri.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/33213271897.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16080c02e4fc4b---88151288198.pdfIn PDF document text
    • https://citronixdeflection.com/nbloom/fckuploads/file/34875862276.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611a606ee1631---59826073929.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607db698e112d---xuvexabujufab.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b012fc5c414---89959072966.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e69d6b18a9e---wadifatigokar.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608f75b5905c6---domixejijatokavuz.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/marudomoja.pdfIn PDF document text
    • https://sicurezzaips.it/uploads/file/55223363815.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba9f43cb05---31799540609.pdfIn PDF document text
    • https://fibra-optica.ro/ckfinder/userfiles/files/30319889812.pdfIn PDF document text
    • http://innotack.com/userfiles/files/lavulugo.pdfIn PDF document text
    • http://thesnowmanicecream.com/ckfinder/userfiles/files/rojibome.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1d5a953ca---gevinanufa.pdfIn PDF document text
    • http://pinzimoniofiumicino.eu/userfiles/files/wumoloweriseve.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=anglo+saxon+homes+worksheetPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d35c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eb6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6E 17512 bytes
SHA-256: c1a1cff13cbbd83196f1f9cc009bebdd01d4e2cb6cd5f3fcedd2f763c9c4b108
font_02_sfnt_off0001189b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189B 10724 bytes
SHA-256: e1b3d91d018b7329630707f74853daa4d732c812998a793ff9d3bea2ded7646a

Open this report in the interactive analyzer, or submit your own file for analysis.