Malicious PDF — malware analysis report

Static analysis result for SHA-256 e597685faa5be71c…

MALICIOUS

PDF

42.7 KB Created: 2020-09-29 23:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc739fcea3e0acef69b8149b536e8bb4 SHA-1: 049cfa32713665544e7cb59f243f85589ab08050 SHA-256: e597685faa5be71cdd26286e631fa4a369bfe91004b71c057b024ad3506bac86
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body, though partially obfuscated, includes the URL 'https://ggtraff.ru/strik?keyword=how+to+play+bamboo+flute+pdf', reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm indicates an attempt to manipulate search engine results or distribute content broadly.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=how+to+play+bamboo+flute+pdf
    • http://files.friendsoflifeinthespirit.com/uploads/1/3/1/4/131438018/69723.pdf
    • http://loxabaku.kmoranart.com/uploads/1/3/0/7/130775883/pezesevu.pdf
    • http://wajifowag.tompetteruti.com/uploads/1/3/1/6/131637649/mejibevaxe.pdf
    • http://lefoliwox.sjnelsonpsychologistcardiff.com/uploads/1/3/1/4/131438888/jikijotak.pdf
    • http://files.walkingdapper.com/uploads/1/3/0/8/130873830/jekowu-tuvuvopileren.pdf
    • http://nelufevug.porterrc.com/uploads/1/3/1/3/131381806/9158680.pdf
    • https://uploads.strikinglycdn.com/files/57cd1ce5-bd9a-4726-af8a-2cb04bc2ce62/33763656626.pdf
    • https://uploads.strikinglycdn.com/files/d28bceba-6fc9-4472-8922-84ab9a6cf737/33531202703.pdf
    • https://uploads.strikinglycdn.com/files/d0c80b00-d7d8-41c5-9ba3-c8c1ed4f25b5/loxid.pdf
    • https://uploads.strikinglycdn.com/files/5dc2b3e4-58dd-494e-9812-7a1a323ec0b2/daligidekerixotomolit.pdf
    • https://uploads.strikinglycdn.com/files/f00a122d-3c89-43e1-8e9d-c019cebbc6b4/22789615665.pdf
    • https://uploads.strikinglycdn.com/files/9f80c93c-8e4d-4ab1-a0a5-57bab8f1292b/89343294466.pdf
    • https://uploads.strikinglycdn.com/files/40e811d2-0c06-4b3d-b210-f161a378a3dc/16114647520.pdf
    • https://uploads.strikinglycdn.com/files/9c22810b-3159-4d13-9de0-56d1e152b722/32093812778.pdf
    • https://uploads.strikinglycdn.com/files/5bbcc8f9-1dac-41cb-928c-011a290feb19/fixebapafamunab.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006987.bin
8f7285b6c537a893cb958c12940435ca69e5bb9b49e373c025dfff78bc46e94e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6987 5208 bytes
font_01_sfnt_off00007b44.bin
ffe9649d0cf559971118b9b740b1ee285513368f4246250402037e0bd7b8ebfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 10200 bytes

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