Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93c7a0ba68c1098…

MALICIOUS

PDF

74.2 KB Created: 2021-03-01 11:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6ac654d123dbba9af4c53070ea9c13d3 SHA-1: 15fbbd95e5729308af43322f83bd867d3ca4b30f SHA-256: f93c7a0ba68c1098094e736cd0496096b706e741e510b9d36f99999b7673a840
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, disguised as a "Forever 21 warehouse sale 2020" advertisement. ClamAV and ML classifiers flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://seumenha.ru/award?keyword=forever+21+warehouse+sale+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387712/normal_603c493fb7bee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_600e0f8ea912a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372681/normal_602907d6ce4f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496602/normal_6033b82f822b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_603c43aa1c4da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413231/normal_5fec9b45803e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425005/normal_5ff62008ebd70.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/how_do_i_find_someone_in_australia_for_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367665/normal_5fdcd44d32c82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484370/normal_601241dc3eb58.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/tixedujegibex/what_is_the_summary_of_diary_of_a_wimpy_kid_the_long_haul.pdfIn PDF document text
    • http://fivexuto.rf.gd/69802435764.pdfIn PDF document text
    • http://pavunununege.epizy.com/videoder_video_old_version.pdfIn PDF document text
    • http://zudavowopo.epizy.com/high_bar_squat_form_check.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/afdcc_formation_credit_manager.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_off0000e544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE544 5208 bytes
SHA-256: 691aab63e1cf7212ea7717be4bd58fa2b9c4eb628ae9c763d9ca22fbb17b2666
font_01_sfnt_off0000f708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF708 10644 bytes
SHA-256: 69f1063d59d1943c621aafad090a6255fbe9ce692e67686f19d39dd5636f5ad1

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