Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f1705555934b63…

MALICIOUS

PDF

72.4 KB Created: 2020-12-19 23:24:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bf5b1b17cf7a760bf31dcd7c81c3e8fa SHA-1: 2c6a75d5656a5262b46afef94fc05417d83d9e0f SHA-256: f0f1705555934b6329e870491b802ceb7cc285d12457f1d24fdef89c05409b42
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' suggest the document is designed to lead users to harmful sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/strik?utm_term=jerry+manuel+foundation In PDF document text
    • https://jevezorubik.weebly.com/uploads/1/3/4/8/134864628/4133537.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/geborogikezabaje.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/ripotot.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://s3.amazonaws.com/pukasojalu/dolciani_algebra_structure_and_method.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/vans_stacked_platform_sk8-_hi_and_era.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6759692c50b1a1e9d9952/t/5fcc3ddc662d5e24e095825c/1607220701071/fipatomofekuleduxexuxavej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcaddb22-e55b-4a6c-b743-ab8e3f7aaa5b/pafomekuxoj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce14e48eda244dc4ab56df/t/5fd1ecb0133bcb3b88a1445f/1607593138565/silicon_valley_humane_society_vet_clinic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/053d5275-516e-4e2d-a897-c5b31a93aa73/46883314912.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/mupafobigitobuwebaruzuta.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/74058572749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3558c7f-72cc-4934-9b9d-c3f5ca8b9890/hot_shot_bed_bug_fogger_instructions.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD16F 4848 bytes
SHA-256: 180af8ceb694375d5a257015cf39797c95692f790cf7f07c5e5d45ffb20d7d03
font_01_sfnt_off0000e1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D4 10964 bytes
SHA-256: 52f98546b30527f1002c671f66b05dfe350616a58af65b92da41d3c454b20038
font_02_sfnt_off00010737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10737 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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