Malicious PDF — malware analysis report

Static analysis result for SHA-256 db0eaf111243a2b6…

MALICIOUS

PDF

75.1 KB Created: 2021-03-05 22:47:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5cafc00f0986d42744f5dcc335fadf6e SHA-1: 18e18c263d0ce557e795b7d4320c47b6f3be26df SHA-256: db0eaf111243a2b659ce49e016eb7d1fb01de3960998cca94793afef27ff21b8
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 0.9997

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://bologen.ru/strik?utm_term=free+online+graphing+calculator+ti+84+no+download PDF link annotation
    • https://nakojuxipesasam.weebly.com/uploads/1/3/0/7/130776326/1745257.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/igdqSii/9390603649.pdfIn PDF document text
    • https://wufisosudima.weebly.com/uploads/1/3/0/8/130874090/zubodeke.pdfIn PDF document text
    • https://wugabatove.weebly.com/uploads/1/3/5/3/135318753/785d5482.pdfIn PDF document text
    • https://cdn.sqhk.co/satasevubu/hi7iQUL/top_athletic_clothing_brands.pdfIn PDF document text
    • https://cdn.sqhk.co/nepofigiper/hf7fBuj/toworofeke.pdfIn PDF document text
    • https://cdn.sqhk.co/nenexozoz/hgx0id0/3845605480.pdfIn PDF document text
    • https://cdn.sqhk.co/gidulikegel/EogZhaY/funny_fantasy_football_memes_2020.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/jemogexan.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/hesgdr1/dewojasi.pdfIn PDF document text
    • https://cdn.sqhk.co/vigibizez/jidghaY/initial_drift_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/zghhbKl/audio_spectrum_after_effects_plugin.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/miwolezedubujoz/reformas_borbonicas_caracteristicas_principales.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/tujisuxilo.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/vamexuju.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/screenshot_capture_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/ropegimura.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/pomajuva.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/how_to_set_up_directv_remote_control.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/chamatkar_movie_full_hd_free.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_off0000e753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE753 5484 bytes
SHA-256: dc5a67bb25a229bd67e783ca24652d4edf0d2ce23afbea44ad7fc146494757c2
font_01_sfnt_off0000fa0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0E 10796 bytes
SHA-256: 10e69c969aae9456c40bb559f482cb7e39ac2957653293a57a34acda11ccd2d2

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