Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6c5630e5800da2…

MALICIOUS

PDF

79.9 KB Created: 2021-09-02 03:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 206de3b5037d601b47ce9eb096ca6536 SHA-1: 0c954425c366850abc7570123327b243a38e2c8c SHA-256: 9e6c5630e5800da24582b4d235aaaf80a926bd31f62215ff04b907b293fe51c5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lure victims to external sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://citronixdeflection.com/nbloom/fckuploads/file/xatep.pdf In PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/37f2aa2bd3119d56ca6496ad17c9dcfa/pewaxosedup.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/pabolupuzopepokifig.pdfIn PDF document text
    • https://tigapilar.com/upload/files/45453928407.pdfIn PDF document text
    • http://jinanxintiandi.com/userfiles/files/mesejonerogiru.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/8bbcd01bc997a8d3c92d0095c1f1a7d2/10405127519.pdfIn PDF document text
    • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/bodapulasejaguniwutafa.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f841c98685---72641345501.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/38930901592.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/nozovoledurezumonafuvebe.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec79c43224---xewubulixerawokokalu.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/i0uo44aegec966r5s6cgrfbgkj/laxovunuvil.pdfIn PDF document text
    • https://szallas-karpatalja.net/upload/gidutuxifuwiji.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/26627663012.pdfIn PDF document text
    • https://bluza-shop.ru/content/File/62328794238.pdfIn PDF document text
    • http://baldonimarcostudio.eu/userfiles/files/33766910287.pdfIn PDF document text
    • http://centrons.com/uploaded/file/190436037561086efe8f361.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/419cf4764df6024a55c05822cfbdce57/52176108694.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/85223385757.pdfIn PDF document text
    • http://beulahcooleycollection.com/clients/870349/File/tilikizulazaserasejup.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/9m8rs0m6ef0coc45i0imn6qmsi/4794148935.pdfIn PDF document text
    • https://robertbah.si/files/file/62944126220.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/89057998317.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/02b935ffdfbdc56057e518e5f61bf72c/9124050625.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/13291111686.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=cardiovascular+effects+of+air+pollutionPDF 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_off0000d24b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24B 10812 bytes
SHA-256: 3c53e0b7cc1cc06d938253f9c322c29041f70e8cd4244c907c6876f8dcdc09c4
font_01_sfnt_off0000eb62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB62 17708 bytes
SHA-256: 7092ca55a4992ecf3dd1fec188ce83b4f4ca1de19909f49d67c34e7dc4a9905b
font_02_sfnt_off000118dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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