Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a510e69d3d8e43…

MALICIOUS

PDF

76.3 KB Created: 2020-12-03 02:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 77bbe0d725264a94cc32e4d41b987ac5 SHA-1: b89a5d639eb3eac84b081c78b9ee08f1090239ee SHA-256: e0a510e69d3d8e435ee34ec2cfc785a1a3154832de0f6b60ec87d7c2629ef3c0
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous external links, with one prominent URL, 'https://traffset.ru/strik?utm_term=gun+show+michigan+novi', identified as a redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains keywords related to 'gun show michigan novi', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9889

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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=gun+show+michigan+novi PDF link annotation
    • https://niwogowepovem.weebly.com/uploads/1/3/4/7/134767936/teremonif.pdfIn PDF document text
    • https://pezusadoti.weebly.com/uploads/1/3/4/5/134525395/d364ce7e2f9c61f.pdfIn PDF document text
    • https://kamenibez.weebly.com/uploads/1/3/4/7/134727972/6b8b5eaf60.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/felor.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/5fc0f186bda9c57a97be6d6b/t/5fc1738d9ee0f32b8789e0d4/1606513549741/16207064096.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59af47d0c8f249d60f117/t/5fc82d6243b29e7a5aeb0973/1606954338850/offroad_4x4_range_rover_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ed43a8b-6ac2-4991-8582-3c0971472133/mongul_dc_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f61ce4-6f43-48e5-a139-e218c9c89007/60133081494.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf4ea4f98375720a5d4cf/1606284522680/rampolla_pocket_guide_to_writing_in_history.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6aae849-4876-482e-808f-c10dbd3d175e/durasovodog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a4d65a-2a33-4a36-92ac-8bb5b200986f/30504154437.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ebc9085bf90c0efd2d89/t/5fc7984e0623334b0c651507/1606916175264/used_ski_boats_for_sale_in_northern_california.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2ffbbdc-e197-44e7-88d6-32b011ccddca/33033056342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94534a94-76bf-4dd7-8427-53ac7428c05e/47839194337.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10ea416f6d44b07bfaa09/t/5fc54e20f8cdb769c692dc36/1606766112985/evangelismo_personal_myer_pearlman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67544741-557c-4ccc-93ec-30a8a3a0406d/arnold_schwarzenegger_soundboard_hd.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2A 4952 bytes
SHA-256: f763e3fc524255fb685f021c30461a675984032a7683d1049000040c1b7f709c
font_01_sfnt_off0000fce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE7 10188 bytes
SHA-256: 3014e6def7c4bc0ebac54b918382c3a68b45d9ec64de902d17844690705c8e72
font_02_sfnt_off00011fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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