Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d865d195215a8a…

MALICIOUS

PDF

67.7 KB Created: 2021-02-06 13:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7dd9f47049bf69cf95e4a2d7e28e39c0 SHA-1: af1d28762c8c2f78b0d432f527ed7175660f974c SHA-256: 01d865d195215a8a781c02090fd9e448edd0e6de59331d49d9055a4899bd0d12
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a search result. The ML classifier and ClamAV detection strongly indicate maliciousness. The primary malicious URL identified is https://jacksth.ru/123?utm_term=heatilator+fireplace+doors+e42, which likely leads to a phishing or malware download page.

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://jacksth.ru/123?utm_term=heatilator+fireplace+doors+e42 PDF link annotation
    • https://cdn.sqhk.co/migiwepi/XjajgYX/rare_blood_group_hh.pdfIn PDF document text
    • http://lofitner.buzz/49374642271emnpv.pdfIn PDF document text
    • https://resonorur.weebly.com/uploads/1/3/4/8/134874279/7403742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_600fe34e5dc5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_601aeac7204e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417208/normal_5fecc1a04c3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409610/normal_5fdc1c7624dde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502464/normal_5ffd802be9fd2.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/43M5KMR/world_war_2_battles_in_order.pdfIn PDF document text
    • http://bigpleasure.ru/izotope_ozone_8_manualegh60.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/BqjeaP2/mabidimenorifipul.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/chbkig8/luvowopawolitowowibapu.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/zozofufulolig/abeda_inamdar_senior_college_admission_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/fragment_based_drug_design.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_off0000c940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC940 5332 bytes
SHA-256: 27161998e4d8d7c3337ae90193f6ce236b344a77fbb81283f1979d48618a04cc
font_01_sfnt_off0000db78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB78 10944 bytes
SHA-256: e8a06c86a1b0ef2ce0f8b5d430081a5810f9f3e48a2d8dda0febcfa0f76ab754