Malicious PDF — malware analysis report

Static analysis result for SHA-256 c601b91d1aab898c…

MALICIOUS

PDF

89.9 KB Created: 2021-03-12 13:44:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 34d9956a48ed450e78fbd8d8070fa816 SHA-1: 5bfbe0bd25b147dd90725e752085ae85a2951ea9 SHA-256: c601b91d1aab898cb933382065bcca31dc6040804018fe6f5879409cd0924db9
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://maypoin.ru/award?keyword=appalachian+trail+map+pennsylvania+pdf PDF link annotation
    • https://kewejalafu.weebly.com/uploads/1/3/5/3/135329801/2d35f2ace4.pdfIn PDF document text
    • https://xunopigiwigon.weebly.com/uploads/1/3/1/6/131636761/5c3adb4494cd.pdfIn PDF document text
    • https://fodubimofo.weebly.com/uploads/1/3/4/8/134884763/fd06ef885ff869.pdfIn PDF document text
    • https://lilafigofuku.weebly.com/uploads/1/3/1/3/131398347/f0e590cad88.pdfIn PDF document text
    • http://lejidakoxinetog.mywebcommunity.org/third_conditional_exercises_perfect_english_grammar.pdfIn PDF document text
    • https://cdn.sqhk.co/dixobiwi/dicjahd/slotomania_cheats_2018.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/c7789b4ed5413d.pdfIn PDF document text
    • http://mizizufiku.mywebcommunity.org/single_crochet_stitch_left_handed.pdfIn PDF document text
    • https://cdn.sqhk.co/lexuxeza/hahfAic/city_racing_3d_game_download_for_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/jagapifa/Nic9giX/febifufalex.pdfIn PDF document text
    • https://vejarava.weebly.com/uploads/1/3/1/0/131070596/lagoposuruz_rujiribifidos.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/babidewekok.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/iIDgcgc/college_basketball_coach_salary_d3.pdfIn PDF document text
    • http://xelapelumu.iblogger.org/55663075827.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/jarirotexab/butogivikeliwijolelimo.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/anneliese_the_exorcist_tapes_2011.pdfIn PDF document text
    • http://nobugurunujut.epizy.com/centerpoint_energy_contact_information.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/gta_vc_cheater_apkhouse_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/7166882324.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_off0001217d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1217D 5548 bytes
SHA-256: 08fbbdf4b6e0f1bd80894c195783d02fc48ae08f0989ab0f9f591e568154e365
font_01_sfnt_off0001343c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1343C 11148 bytes
SHA-256: f34ae3075bbe0da7312cd858c58799b1d91b6d949083e01f8dc64e7186683b0d

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