Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c9fc0213d85901…

MALICIOUS

PDF

110.3 KB Created: 2021-05-02 17:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 467dc76731acafa6ab522a7c1e88e5f1 SHA-1: 0d1b53d976d5fbaa2ee82b72efca83b13d310e51 SHA-256: 96c9fc0213d85901d66cbe38c26be8f57e6b5395f65c68e074624f8e4a6ee3ad
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The primary URL, 'https://ponafet.ru/strik?utm_term=mary+poppins+returns+script+pdf', indicates a lure related to 'Mary Poppins Returns' to entice users to click. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ponafet.ru/strik?utm_term=mary+poppins+returns+script+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4462059/normal_5fea22686260c.pdfIn PDF document text
    • https://rimekadosa.weebly.com/uploads/1/3/4/4/134467829/279709397fe2.pdfIn PDF document text
    • https://xosebabonewita.weebly.com/uploads/1/3/4/6/134613761/jobutuxes_kilavuzema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_60185bf81bd2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416659/normal_604cd28be1cdd.pdfIn PDF document text
    • https://vazemewezasal.weebly.com/uploads/1/3/0/7/130775722/e11f5abf267.pdfIn PDF document text
    • http://legibovusapezo.mypressonline.com/economic_recession_definition.pdfIn PDF document text
    • http://kexumojazo.mypressonline.com/caddie_woodlawn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448719/normal_601e72a4dbef3.pdfIn PDF document text
    • http://kimugifogetami.medianewsonline.com/60092259080.pdfIn PDF document text
    • http://didazema.mypressonline.com/how_to_adjust_burner_on_gas_water_heater.pdfIn PDF document text
    • https://lewagezu.weebly.com/uploads/1/3/4/3/134369469/tezedobotol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_6c58a487768843919184759153aab657.pdf?index=trueIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_bf30b8d51a0c48419efa32f1b5ba5c36.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/ergobaby_omni_360_back_carry.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/jenuwivukoxujepol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86359fec-c3f0-4500-ad2e-7a1c8118cf46/minecraft_le_guide_redstone.pdfIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_5bd32c81629d411db8eca6caebb2ffb6.pdf?index=trueIn PDF document text
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_453e6cabe52e42439b6be2cbe3e866cf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f55ebb77-e46f-40ef-8b58-51e0d56a60ae/lerudejenin.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/88310490055.pdfIn PDF document text
    • https://45b0b119-5f8c-43e7-b437-4e12d17c1c81.filesusr.com/ugd/3826db_9a15b24d05684823a24457de9515f816.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16552 5104 bytes
SHA-256: bab2476d1bc9df7a792e6eb1757c19016975f6670146ea330d20011ae1ff3d66
font_01_sfnt_off000176c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176C3 11440 bytes
SHA-256: 09333ff1331ee717f75627f83b79d98e3b0fb47cc498ad6ad7a50b6bc682b65e
font_02_sfnt_off00019d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19D73 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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