Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4a097b1c17cb24…

MALICIOUS

PDF

82.1 KB Created: 2021-03-17 03:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5bb1a29a6e3c7e4738075f208ee622ac SHA-1: c6461bde6cb4b9179713fbe333dbe84cd99dd285 SHA-256: cc4a097b1c17cb246285e2dd0d81fd77566e1ece6eb6ed5dc15b43eeeaa14fc7
206 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. It uses a callback-phone (TOAD) lure. 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 7

  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/wix?keyword=autocraft+battery+charger+manual PDF link annotation
    • http://latencfsrt.space/form_reg-1_ol4c4i4.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/fbjdfgv/37603450240.pdfIn PDF document text
    • https://biteledazuxol.weebly.com/uploads/1/3/4/3/134315761/vogudi.pdfIn PDF document text
    • https://gisoroweri.weebly.com/uploads/1/3/4/8/134893792/9161f691ef.pdfIn PDF document text
    • https://zixaxufomomofir.weebly.com/uploads/1/3/0/7/130738537/d7380.pdfIn PDF document text
    • https://sibotapitagota.weebly.com/uploads/1/3/4/3/134378411/ed2329.pdfIn PDF document text
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/fezadokipu_vadeborakudu_jukoki_welebapaz.pdfIn PDF document text
    • https://lejuziluzamof.weebly.com/uploads/1/3/4/8/134863123/fofadigawobox_zevoradapawo_godolasor.pdfIn PDF document text
    • http://distornyup.site/60078122370xdylv.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/hgN3Xgh/descargar_minecraft_pocket_edition_para_pc_windows_7.pdfIn PDF document text
    • http://podarokinsta.site/721256360426ikdw.pdfIn PDF document text
    • https://feronodi.weebly.com/uploads/1/3/0/8/130813799/pojuxojebige.pdfIn PDF document text
    • https://fejuzewe.weebly.com/uploads/1/3/4/8/134883228/tagitonotujexem.pdfIn PDF document text
    • https://kifakofaw.weebly.com/uploads/1/3/4/0/134016777/ninotegob_zivozidolodazu_gijoluvopibaluz_rolov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://56148a0a-83a3-4003-94ff-78d3044b7c00.filesusr.com/ugd/6f5f23_aebef82b339842158a4ff4176625b950.pdf?index=trueIn PDF document text
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_547eef010e94450ca2559b774fe69475.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mukut/61957534832.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/keritu.pdfIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_9c88e5d9f05f4c8691d0ab64273e7e3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/jotapapovozuxovuwenuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/83607757396.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10421 5348 bytes
SHA-256: e246aa3bf643f6ee30bb7a6884ab7ac6c2095d7c415e0c8ae095cc6c8023e0e2
font_01_sfnt_off0001163b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1163B 10900 bytes
SHA-256: 5d966c7364b6bbd56f4ab341434bd0c94562221ef4f22d0fd51745a2f502982e