Malicious PDF — malware analysis report

Static analysis result for SHA-256 94415bb9abda46ed…

MALICIOUS

PDF

67.0 KB Created: 2020-12-15 04:05:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c606661021f035da9d218644b887df65 SHA-1: efc710a9a58c1b043bb9b69a6e99c2e0c77a42ad SHA-256: 94415bb9abda46edccf000641e299b4a7e16d837c0ccb84f40663fd7538f11fd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffnew.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Hillsborough spring break 2020', suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=hillsborough+spring+break+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375908/normal_5f9049dac3b14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_5fbf647672d18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f86f5f66dbb9.pdfIn PDF document text
    • https://pulipelese.weebly.com/uploads/1/3/4/6/134686308/lafopasex_joposemus_budenegeso_xugiwewipumefo.pdfIn PDF document text
    • https://pebekokinusixi.weebly.com/uploads/1/3/4/5/134506994/nereneru_xulirifivaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5fcaea8957dd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e607df132613bbbdbdb8/t/5fc186e74f9837572019a27f/1606518504970/goodyear_eagle_sport_all_season_vsb_review.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/daxagikevilolobefu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5498fa04221c71173fe4/1606374558110/osrs_piscarilius_favor_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c2059698b02c7f395ada/t/5fd714b0acac596b0cd2be4c/1607931056936/fuwulubiwu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc302ce16f6d44b07cc72db/t/5fcbe42cb495bd20282e5881/1607197742025/vefakevumozomepojuvoma.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fd1c072f2ee360040f8ab4f/1607581810829/69506795748.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_off0000c93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93F 5520 bytes
SHA-256: dfddee31cd9cdfa26dcd7bf4acbb5f4c846a92582ea932690b9a0115388f6e56
font_01_sfnt_off0000dbf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF1 10300 bytes
SHA-256: 84e1cf408890bc4c40ac7e6f614be2eaf772d38be716ffa2e5f827e085069278

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