Malicious PDF — malware analysis report

Static analysis result for SHA-256 d901927ee56ad6be…

MALICIOUS

PDF

67.2 KB Created: 2021-01-01 08:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7fa5ea0fb4985a6d9bcebf0dd9cfa3d7 SHA-1: e955d54887520bf6a2201b60d0a93d0ddb31e523 SHA-256: d901927ee56ad6be1d7135f65c960de4b4c99df043343bce61af3d6d39b43586
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including critical alerts for malicious redirector links and a link farm. The embedded links, such as 'https://traffking.ru/123?utm_term=american+association+of+notaries+illinois', are designed to redirect users to potentially harmful websites. The presence of numerous external PDF links suggests a phishing or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=american+association+of+notaries+illinois In PDF document text
    • https://cdn-cms.f-static.net/uploads/4415929/normal_5f9ed8ad57a0c.pdfIn PDF document text
    • https://kusovagojevo.weebly.com/uploads/1/3/4/8/134883394/3001259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f871a1436c70.pdfIn PDF document text
    • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/2420683.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/RHXjeMu/14923128540.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/VjbTnib/pamerokijaninamu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403676/normal_5fa78d299c2ec.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://uploads.strikinglycdn.com/files/51790e64-7521-4d08-9558-bee404483aa9/xujemeroxamalo.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/bartlett_city_schools_shared_residency_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/making_models_of_covalent_molecules_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a312ac-0912-4438-a352-b8b1eff4846b/70598801544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf6a9cc-6c82-4900-bc37-ee211643c04e/how_to_open_camera_roll_on_instagram_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cc8dcac-2c4d-4c93-a51c-ded60db6ef26/dikozani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cc2c90-9dae-4ee4-86ab-800f1397a024/rubutujalonivedegaxadetud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD60 4804 bytes
SHA-256: 84d937ad50f82d463585c4e3418afd4d7f53438fd6c69453d41c3ca3f7dbf3ae
font_01_sfnt_off0000cd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD80 10648 bytes
SHA-256: 3d08a1c95d14278af064cf47c4df66e5d34036c073cee3e8dfa89593191b62ec
font_02_sfnt_off0000f1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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