Malicious PDF — malware analysis report

Static analysis result for SHA-256 3484742cbd29e385…

MALICIOUS

PDF

65.0 KB Created: 2021-03-23 06:08:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a903b04d1d1a981c5ce663ef3fd74b0a SHA-1: 0cd1586f0bc69567c9ec3fa49f67db77f64e8495 SHA-256: 3484742cbd29e38572693154127381d3b2047d921e9eef79bbc17910ecb521ec
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/award?keyword=html+tags+pdf+book PDF link annotation
    • https://cdn.sqhk.co/letarezetap/qCFbfIF/free_funeral_program_brochure_psd_template.pdfIn PDF document text
    • https://cdn.sqhk.co/vetumuba/baed0gd/38199830300.pdfIn PDF document text
    • https://cdn.sqhk.co/guzoladip/gDqAv5b/class_8_maths_syllabus_cbse_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/c1iaX9C/lezadewonubomopojefejumip.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/EidxCgN/dragon_ball_adventure_idle_redeem_code.pdfIn PDF document text
    • https://cdn.sqhk.co/pefapalotux/dujjRjd/29068522950.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/ihjjfbE/australian_national_parks_annual_pass.pdfIn PDF document text
    • https://cdn.sqhk.co/delopomixaba/jchhhhq/home_depot_dewalt_pressure_washer_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/xunixenovapi/YJNitgg/16333586920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/76348504842.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/kelevanonewozevo.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/23744034835.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/hp_compaq_8000_sff_drivers.pdfIn PDF document text
    • https://36c7e617-1221-4173-b726-d5bce2878801.filesusr.com/ugd/610d21_b195b9f5aba1472ca9d1744c4822f15a.pdf?index=trueIn PDF document text
    • https://348ddb29-83e1-4812-94a1-743b72ef9b42.filesusr.com/ugd/23b571_b5c3b810420c42bea24f539bad964907.pdf?index=trueIn PDF document text
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_0ed407b4509f49ff9910572d2a53c5c5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/64361940266.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/brain_training_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/anm_form_date.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/zosedupobasonifo.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EB 5432 bytes
SHA-256: d9997558c375e3e03c30b2074d949712245282402208eeba9278300868230b90
font_01_sfnt_off0000d64f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64F 9648 bytes
SHA-256: c2c3bdf56b66cbef8f8b332db0475de16b5c61fb36d83c7bdf6842e2196985f0

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