Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e96772ee798aa1b…

MALICIOUS

PDF

78.8 KB Created: 2021-02-15 15:04:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 7266b3a063cdac8aa0781b7e74d81695 SHA-1: 4f16ba7346cb368a7a47380138dba74cd7e3bd8d SHA-256: 3e96772ee798aa1bbb390c2d6cafdbe2810ac3122b601b28e2f7209477eab616
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' pointing to http://circus.market/55857512096g8plu.pdf. ClamAV and an ML classifier also flagged the file as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious sites, likely as part of a phishing campaign or to download further payloads.

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://leonvi.ru/123?utm_term=digitech+jamman+looper PDF link annotation
    • http://circus.market/55857512096g8plu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383295/normal_5feeb80979a04.pdfIn PDF document text
    • http://difodalutovirub.iblogger.org/neon_pink_acrylic_sheet.pdfIn PDF document text
    • http://electorat.org/bach_chaconnew836e.pdfIn PDF document text
    • http://shoop-ft.ru/ccna_certification_exam_questions_and_answers_2018xfle2.pdfIn PDF document text
    • http://pressit.space/great_sausage_recipes_and_meat_curingje1pk.pdfIn PDF document text
    • https://nomabedipami.weebly.com/uploads/1/3/1/4/131437379/7038722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_60127134c780b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481170/normal_5ffbfd9713876.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/jevopemosod/21709667089.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/amazon_app_offer.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/38304361104.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/20677803226.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/acrobat_mac_update.pdfIn PDF document text
    • http://nelozud.epizy.com/dunovekox.pdfIn PDF document text
    • http://kugefosames.rf.gd/jonah_williams_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/56864075662.pdfIn PDF document text
    • http://janenukexozi.epizy.com/appvn_apk_app_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF653 5244 bytes
SHA-256: 48809fdf18ba3ce6bbdb706e0d5530baf052c96e15919a8cedff3807d1482136
font_01_sfnt_off0001080f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080F 11292 bytes
SHA-256: 0a6faa510bedb5e422af6c1cb345dfab2c31929cc5de2ef8be9aa875cb178d9c

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