Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe84bf255b1554af…

MALICIOUS

PDF

75.8 KB Created: 2021-02-18 14:29:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 18b0473f46c44e55512398c6e3e54af1 SHA-1: e885a1d35f61d7d89d104068f30e3b18b7dc70e1 SHA-256: fe84bf255b1554afef4ba8fe356fd61f4dc5a5e00211720ffba72027580f8219
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through social engineering, aligning with spearphishing tactics.

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://bologen.ru/123?utm_term=aroma+rice+cooker+model+number+arc-914sbd PDF link annotation
    • https://cdn.sqhk.co/jarixizotib/jejjZ9U/kujubapekevitirekemow.pdfIn PDF document text
    • https://cdn.sqhk.co/bomagomax/jiigfhc/trav_and_cor_call_fake_sick.pdfIn PDF document text
    • http://changely.club/73938900575wpi85.pdfIn PDF document text
    • https://cdn.sqhk.co/dewobube/i4hijdA/247832041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_6017ced7119c4.pdfIn PDF document text
    • https://cdn.sqhk.co/pagupuxu/gcrchet/5245799970.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/6609864.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/96HlYhh/wasapodadi.pdfIn PDF document text
    • http://tur8osale.site/foliage_report_hudson_valleycv2xu.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/jcjgifo/zaxefusazudipisanudobofa.pdfIn PDF document text
    • https://cdn.sqhk.co/daladovum/CghpSV2/jepudonetobido.pdfIn PDF document text
    • https://nivosuvadifo.weebly.com/uploads/1/3/5/3/135384950/9762272.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/bededuxotulapil/michael_crichton_top_5_books.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/58401238449.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/lagu_change_up_seventeen.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/cae_test_1_answers.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_off0000ea85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 5604 bytes
SHA-256: 206f7e56bec23e319f30eb342c178b51cd77a15280d0014865ae086da2189584
font_01_sfnt_off0000fd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 10748 bytes
SHA-256: d1e4b5003023e2aced100c81c2d3502e034b05cd1dd3f3ec2cc379271b489a38

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