Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f60c9a5cdb3264…

MALICIOUS

PDF

69.5 KB Created: 2020-11-12 15:03:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2866c179b6026cfdc70b34142ea37a1c SHA-1: d7e00702e5cca9dfac5851c34828f694ab56579f SHA-256: 06f60c9a5cdb32644c3bb3056537d1ec7bb490c6ff45f795193de59070c0dea1
252 Risk Score
Tags
free-cdn-ebook-manual-lure

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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffmen.ru/strik?utm_term=ignou+assignment+first+page+pdf In PDF document text
    • https://kogexabisuzim.weebly.com/uploads/1/3/4/3/134322867/tijuwisam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412396/normal_5fa0d38ded009.pdfIn PDF document text
    • https://turikiripejuz.weebly.com/uploads/1/3/4/5/134501804/xudeg-kujibudadosa-wamedek-vosopakek.pdfIn PDF document text
    • https://poxozebirineba.weebly.com/uploads/1/3/4/4/134447173/981102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f9a4c0f944b7.pdfIn PDF document text
    • https://paboludozov.weebly.com/uploads/1/3/4/3/134333588/niwamokodid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_5f9126c398fb0.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/fb3597cd80cb954.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379370/normal_5f96382c31986.pdfIn PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/wuguwas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4861b7ed-889b-4afc-b04e-e6964707afd7/palabras_agudas_graves_y_esdrujulas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/797e85e7-8179-4c21-a857-646817b78872/injustice_2_mobile_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/35700232872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69ede3b-06a8-4bec-8888-93a7bdc961e6/dragon_ball_meaning_of_symbol.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_off0000d1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AC 5268 bytes
SHA-256: 457f748fb13ecd4411f058fa2411bba4805633b7da6beb12a0dd0b2c67eec0c9
font_01_sfnt_off0000e387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE387 10484 bytes
SHA-256: 724e503412dcd2b2c5828a2aebedd7c660a7569361a47d80751b4448ab9f0292

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