Malicious PDF — malware analysis report

Static analysis result for SHA-256 e152626601dd2f8b…

MALICIOUS

PDF

68.5 KB Created: 2020-12-16 13:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f4912163ea9a99882460de02ee9662c4 SHA-1: eb061c202bb5168728e75a3790ae5fc788f020f0 SHA-256: e152626601dd2f8b11402a4ce4581919a643487bd65564829301dd61365b051b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffking.ru/123?utm_term=bach+prelude+in+c+major+sheet+music+pdf'. This URL is likely used to redirect the user to a phishing or malware distribution site. The ML classifier also flagged this PDF with a high probability of being malicious. No scripts were extracted, but the presence of the malicious URL strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/123?utm_term=bach+prelude+in+c+major+sheet+music+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4366623/normal_5fc66ef135c89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5f9116614e0c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc0bdc717e7202640e9644a/t/5fc17ad0173fb5383bdac30d/1606515410401/monsters_inc_cda_scene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb2efc25-c296-4366-9835-27c751f564dc/weber_32_36_tuning.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc12052bd14ff0dd29e0ecd/t/5fc2cbcb5147b148048f4259/1606601676724/dunujag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d387253-d71f-4a1c-a284-efd7a08bd010/harmony_of_the_gospels_lds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70be7c4c-ddfd-44fc-bc71-1c79dc8a94ed/eso_free_mount.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af44a785-b506-4b7d-a2eb-5bcb51065c31/pilekepemonaxajuvegupobu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f319ab79f442f229e2d8/t/5fc173949d79364840c45e3d/1606513557066/lexington_ky_pva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c3246d9-a058-4dc5-b618-23e9d6bb6539/post_op_fever_atelectasis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcef134ad06677b0d28d64a/t/5fd063ad26d54b3c06d198d2/1607492526291/53332102837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06fd5f1-93c2-4ea3-a366-11f9c225832c/dewalt_4200_psi_pressure_washer_parts_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e006a879396864083677/t/5fc159a04f9837572011ed5a/1606506913685/fupulabuzef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f4830bf-00f2-48a7-ad04-5325a9f2b4cc/79686857971.pdfIn PDF document text
    • https://musescore.com/static/musescore/scoredata,jsoIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6D 5404 bytes
SHA-256: 5c5b176a53747ebfe9272ff1b1252b6b4d22d19673ff0d3730b09ee024eedb22
font_01_sfnt_off0000d093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD093 11332 bytes
SHA-256: 184c061e6c11dd8a1f6758befc02569472fe165fb0323f860a039f4fe7ea03ba
font_02_sfnt_off0000f683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF683 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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