Malicious PDF — malware analysis report

Static analysis result for SHA-256 53319b78e6c73360…

MALICIOUS

PDF

83.8 KB Created: 2021-04-07 18:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f45f4e928895f229d7cfadce9c300b60 SHA-1: 95a9f72ab76f93cffa628096ba604eed05b268c9 SHA-256: 53319b78e6c7336007cc1a9c9d47ffd4b033f9fcea5410075c4e6c9ac82f594a
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 0.9997

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://baarspo.ru/strik?utm_term=gtx+970+vs+1060+cyberpunk PDF link annotation
    • https://cdn.sqhk.co/vuxesojogugu/UPSUCha/dapukeno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448743/normal_602979cddae9e.pdfIn PDF document text
    • http://shopmzm.site/guided_access_samsung_tablet92p93.pdfIn PDF document text
    • https://cdn.sqhk.co/zoribakim/ckJmjfo/givovipu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392658/normal_60333adcf2dc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_603452bf8095e.pdfIn PDF document text
    • http://smeh-mif.space/magnetism_practice_worksheet_answersqkkut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414159/normal_5fcc3789904b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_6029f4e3c752c.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/ifZjhji/nebonedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411714/normal_60527b4539df0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465930/normal_605a7a8ae4a09.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/dhjymgf/90254579091.pdfIn PDF document text
    • http://upgrade4me.com/narcos_cartel_wars_tips_and_tricksrud8b.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/hbgz8xO/ranirirajekabukowov.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/gQMggPS/texas_longhorns_scores_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410207/normal_5ff1f24b252a0.pdfIn PDF document text
    • https://cdn.sqhk.co/tusufawenu/5odiiMQ/99657159914.pdfIn PDF document text
    • https://cdn.sqhk.co/fupupusamun/fbsfH5p/63368284709.pdfIn PDF document text
    • https://cdn.sqhk.co/kiwametin/f1heWUQ/red_ball_3_roll_and_jump.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502439/normal_6056770b94c94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369304/normal_5fcd750893a06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000107e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 5736 bytes
SHA-256: 168c2f8dfbeedbbecdc472b6d30af5200a511b94ff435236e6ad0d6894818e06
font_01_sfnt_off00011b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8F 11288 bytes
SHA-256: 3bd5f044dc254f7f96e59a1880871431ba3f60e332152205c6fee17186e8220a

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