Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bf31d02077b29a…

MALICIOUS

PDF

70.3 KB Created: 2020-11-24 16:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 01e941d68e2b9b197e07587df24de60f SHA-1: 1ef5551dd32425b88cb41e2296a114fe37b1257f SHA-256: 60bf31d02077b29a7ca1d7e982771603880b7d84a13fc5a60fa3b4c89afd568d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, including one to 'traffset.ru', which is flagged as a potential phishing or malware distribution site. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, suggesting an attempt to manipulate search results or distribute content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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=uncle+sam%2527s+thanksgiving+dinner+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5faf3d7040929.pdfIn PDF document text
    • https://mumevifovamix.weebly.com/uploads/1/3/4/4/134486033/4270137.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/kisagoz/85278347238.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/74059522063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c954736c-8fc1-4149-ad89-45862990b7a1/davovoriwokisazoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a95a7cc-5a47-478f-884c-b254be819d18/91666712080.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/digimon_links_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035548ef-625f-4cf4-ae20-a4b1e66fc66a/93710275237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1d90641-4dac-46ed-ae2b-ca9e8d814b9d/solucionario_libro_biologia_y_geolog.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/filmywap_2018_bollywood_movies_lust_stories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34de6b1c-e920-47fa-8f48-4904aa1ddbe7/58448568357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f180a07-320b-46b0-9549-7902f6efb4af/34125684355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7916375-2208-44de-ac22-8e736ce7db30/fofupibujodowafugire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9681c69f-184b-43e5-a4c7-d80c3a83db60/the_all_new_switch_book_download.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F1 5592 bytes
SHA-256: f98a738b381c6c2c69edfe0cf73d995f7ea9fc611619e3489f0ecec16a601443
font_01_sfnt_off0000e8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F1 10216 bytes
SHA-256: 1bf28232ae90d36c5fd18beaefc53cd366cfbacdc41078ba9bdb63fee80a4e77

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