Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d36e2e12995edec…

MALICIOUS

PDF

76.2 KB Created: 2021-04-09 08:08:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8144cc52b2234c20256f13374963f1aa SHA-1: 73da836e6bd135c6315b39e40b37a8ae352ef8d0 SHA-256: 8d36e2e12995edecde9ccee9ab3113964a8859835f708b9ac6ede015be3f635d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely to host further malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to car seat installation, a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://kuzutuzo.ru/strik?utm_term=how+to+install+evenflo+car+seat+forward+facing
    • https://static.s123-cdn-static.com/uploads/4487625/normal_60033908a3b5e.pdf
    • https://cdn-cms.f-static.net/uploads/4365549/normal_60597618f1d17.pdf
    • https://cdn.sqhk.co/kanojasav/j0Dibhi/9381715592.pdf
    • http://sitizinudex.getenjoyment.net/92520879484.pdf
    • https://cdn-cms.f-static.net/uploads/4420468/normal_600d15332c832.pdf
    • https://cdn-cms.f-static.net/uploads/4467036/normal_5fe6a626838d0.pdf
    • https://static.s123-cdn-static.com/uploads/4454965/normal_5ff210ad35b04.pdf
    • https://cdn-cms.f-static.net/uploads/4445118/normal_602c29f3358b8.pdf
    • https://static.s123-cdn-static.com/uploads/4368487/normal_5ffa6a4060bb0.pdf
    • http://vemasujananexu.22web.org/95091632855.pdf
    • http://sigixexizo.sportsontheweb.net/18244148107.pdf
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5fd1c590d2a74.pdf
    • https://cdn.sqhk.co/kejofuvata/T7YpuVc/zater.pdf
    • http://buxeletifexid.medianewsonline.com/86876773071.pdf
    • https://static.s123-cdn-static.com/uploads/4445106/normal_5fec85b730afb.pdf
    • https://cdn-cms.f-static.net/uploads/4379841/normal_604cb393851f7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/03180d67-cf41-4f30-953a-da73b77f3dbf/setefatefixopokeduxezirot.pdf
    • http://vezoxonu.epizy.com/disintegrate_crossword_answers.pdf
    • https://uploads.strikinglycdn.com/files/a89d992d-bf5d-464f-b7f9-b4e43ec029a8/xexexotorinukomexo.pdf
    • https://uploads.strikinglycdn.com/files/28df35ca-363e-45ff-a5b7-95b795c5b145/21188880543.pdf
    • http://nimunofat.epizy.com/open_office_spreadsheet_calculations.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecc9.bin
f6c4297929595f90501a098c45c131978b0d734bcf36407a3c72d2ae66bb1972
pdf-font-stream PDF embedded font (sfnt) at offset 0xECC9 5304 bytes
font_01_sfnt_off0000fef7.bin
eca8180a4938afe8a356b944b7e2c394393c9799f171c4dc7d3feaec25090286
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 10668 bytes