Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df0fbe1a0832699…

MALICIOUS

PDF

92.6 KB Created: 2021-07-06 17:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 205d259e8ed18b28e1dd4b1383e12ab0 SHA-1: 4913339af56af1f7a99ddf023bc3f7a556523e15 SHA-256: 3df0fbe1a0832699d8815dba425229b27528506f69dec527a7ac42bac6232a71
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs pointing to various websites, many of which appear to be compromised or hosted on disposable infrastructure. These links are likely used to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/uplcv?utm_term=latera+nose+implant PDF link annotation
    • http://adria-ex.com/images/blog//file/7614822718.pdfIn PDF document text
    • http://industrialdevices.in/uploads/xizejizavoz.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd2779ce75---55356352326.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c9614cc9fc2---jirirudojaxo.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e3b0dc216b7---21689316056.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/453562c7815a18b1be51f4af77a0659b/kisijejotifoneliledeweb.pdfIn PDF document text
    • http://centralcogtc.com/uploads/file/37360058020.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/2ip9q0h6a7p9m76e3q79ru6hvg/93658685967.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/503cda386d954a41f80dc7c2024672b6/fitukuranomemusadosizire.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16075d17e1946f---vegupilobowo.pdfIn PDF document text
    • http://fotossc.pl/_files/file/fewolute.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/9fafa07eb5b5906c361360a1a9e783d7/27748014785.pdfIn PDF document text
    • http://gfhs1978reunion.com/clients/56625/File/tarumagu.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/oq3nhvqg2bk4oonji5v3arh53o/20855020727.pdfIn PDF document text
    • http://pwr-tech.ru/userfiles/file/dewibusuxuvafadosumabuguz.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/rudigofavajas.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/datapi.pdfIn PDF document text
    • https://associazionedynamica.it/uploads/file/litirudederuliba.pdfIn PDF document text
    • https://stehovani-ostrava.cz/static_pages_files/file/36498439050.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/8e3it96qkajcbobrrehiu1qj6s/gokaxumu.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 10372 bytes
SHA-256: 7773c0d98e5029c65a3254099dc5affd5603c738a9b78f8381cf7ca89a0df449
font_01_sfnt_off00010a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3A 16100 bytes
SHA-256: 6b54a3f50d1a413a5c8c0ed289a9c866e37e8bd73df0b162fe7132700ce54c18
font_02_sfnt_off00011f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F78 16972 bytes
SHA-256: 47a7ce8a0e1269b028853984bd0ebf21f0bfb8f754900cfc908acafb8d595cfb
font_03_sfnt_off00014bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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