Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e5440d8fc3ef58c…

MALICIOUS

PDF

66.0 KB Created: 2020-12-02 09:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33939410c098f3dfe4d58975aad5eba0 SHA-1: 774e37cc6f819276655be92507a40a0281f3e017 SHA-256: 7e5440d8fc3ef58c884917010381b81dd12ece31864e4815c342679f45a23902
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF link farm' designed for SEO manipulation. The document body, though heavily obfuscated, contains text related to 'Dnd 5e spying spells' and metadata indicating it was generated by wkhtmltopdf, suggesting a lure to external malicious or scam-related content. The presence of multiple unknown reputation URLs further supports a malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffset.ru/strik?utm_term=dnd+5e+spying+spells
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdf
    • https://zamomojufowa.weebly.com/uploads/1/3/4/6/134613680/murakaw.pdf
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f984e12a3639.pdf
    • https://cdn-cms.f-static.net/uploads/4446491/normal_5fbb29cb6519f.pdf
    • https://static.s123-cdn-static.com/uploads/4415950/normal_5fc43608444ea.pdf
    • https://cdn-cms.f-static.net/uploads/4408009/normal_5faf31dd3be5e.pdf
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5fb864e3ce9bd.pdf
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5fc25f0b15851.pdf
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f966002e701a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/616ecabf-8599-42aa-a481-52ed8fc5b9b8/17059129304.pdf
    • https://uploads.strikinglycdn.com/files/dbd79476-7cc4-4822-9fb1-15853dec9050/69679609028.pdf
    • https://uploads.strikinglycdn.com/files/7e1db033-43e3-4164-aa34-20c22ef91051/vawusavuranuwemu.pdf
    • https://uploads.strikinglycdn.com/files/263ae9ab-5329-4d46-a3da-5033b1c27562/ap_lang_question_sample_rhetorical_analysis.pdf
    • https://uploads.strikinglycdn.com/files/bed59008-5ae3-41e7-8715-59f0eebe9e39/72666561647.pdf
    • https://uploads.strikinglycdn.com/files/7b70fbcc-ad36-4e19-b10f-a38d47bb26c4/hospital_beds_for_rent_sale.pdf
    • https://uploads.strikinglycdn.com/files/6d3318ff-8dd0-464a-8c99-73c8b02f8ea2/vakapa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c86e.bin
5cd974ed589d91803946d6a386de9b69857c1a17a18baf36163e239b87dbf346		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC86E 5044 bytes
font_01_sfnt_off0000d9bb.bin
7ab6f0e5f01ac88549dd68c14a000e7d602073c6813ae80e655f09491d6b2b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BB 9884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.