Malicious PDF — malware analysis report

Static analysis result for SHA-256 750190f9491f894d…

MALICIOUS

PDF

96.6 KB Created: 2021-04-25 20:57:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 423eb1ebd0b824f1976333192840a713 SHA-1: 7092489232749c63c18c2ce2592555b0cf04558c SHA-256: 750190f9491f894d43d4f5d831b80f11c32275dc190ed12daa2a0e93d06f7914
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/strik?utm_term=acer+laptop+price+in+bangladesh+2021 PDF link annotation
    • http://dezejosetoduz.iblogger.org/best_ereader_for_books.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427076/normal_5fdf2fb6838e1.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/asighgz/dragon_stickman_transform_shooting_games.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/4KNfjd2/all_colors_of_the_rainbow_in_order.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453329/normal_603efcb5b54b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_606c33e4673f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_602720379de6e.pdfIn PDF document text
    • https://cdn.sqhk.co/rilowikapaz/4pvngeS/gulezamakipototewiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462056/normal_6057dbc055ee1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_60347a6d788b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_60371c6da503e.pdfIn PDF document text
    • https://cdn.sqhk.co/resozasevej/gcjc0gg/19896109630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403685/normal_600f588e4d0e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387932/normal_600b78e75a8c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446642/normal_6051af7210b46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407793/normal_6046f9d84f11f.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/dHthjhp/homeschool_programs_in_nashville_tn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuxozodox.epizy.com/short_film_budget_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/artificial_insemination_in_horses.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/feeling_faces_coloring_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/samsung_galaxy_s9_price_in_usa_2019.pdfIn PDF document text
    • http://kajonefev.rf.gd/88118179899.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/47961809984.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_off00013b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B0F 5788 bytes
SHA-256: 464d32eac4260d91a0838531ad03c4dc3584fd962d2924bf75c7732a88cf2c45
font_01_sfnt_off00014eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EBA 11168 bytes
SHA-256: e2a646edcffe21c49be990e622b9cad2ff55a9884b00c68ec4fc3d5b6b366ec4

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