Malicious PDF — malware analysis report

Static analysis result for SHA-256 005c49f4b739c8ca…

MALICIOUS

PDF

68.3 KB Created: 2021-03-29 20:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6d4c25b607feb5805b5336494975d152 SHA-1: 5f8e2963dafc9b393bd19dcb1258a37ac4f818a0 SHA-256: 005c49f4b739c8ca5f8a03d397636144576927e027c8bd37adab1e85098cbc4d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or download further malicious content. The document body is heavily obfuscated, but the presence of the external URI and the high risk score suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/aws?utm_term=utilitech+pro+well+pump PDF link annotation
    • https://cdn.sqhk.co/zobelekivix/ehhKifc/27382994507.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449984/normal_5feb9f79f1ed5.pdfIn PDF document text
    • http://ditoterelutas.sportsontheweb.net/17588528589.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/d5gf255/66952861223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383444/normal_601ee8000898e.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/STjhPhf/affirmations_for_women.pdfIn PDF document text
    • http://gokawojop.scienceontheweb.net/raludog.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/ibOVSjd/bivofiwuligexulupotiwu.pdfIn PDF document text
    • https://cdn.sqhk.co/dedenijikal/hn15bPe/2_player_games_on_xbox_1_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413977/normal_5fcc44a5bba8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daximogosamov.myartsonline.com/24992254703.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/77951880167.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/32723073085.pdfIn PDF document text
    • http://pisonepegosa.myartsonline.com/simowukosaveneteboxiruxi.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/arthritis_and_rheumatology_journal_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/gobizimelozifibedokovezas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0254c796-1915-4a1b-8751-78721ab0a9d3/pisulufapigize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f1253c-c33f-4267-b756-be1631814c0f/64950673052.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/wizoramerujef.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/3d_lut_photoshop.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_off0000ce2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2D 4868 bytes
SHA-256: 6228de5358e73aef3b8ad7628b97e5ab07ecc71f5f9c0477dbd8fb7820fb5ecf
font_01_sfnt_off0000dea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA5 10612 bytes
SHA-256: 0119af17a0a2104677bb8ebe37da37287628c42400638552dcfda7e626244402

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