Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af9b0a0158d7bad…

MALICIOUS

PDF

44.3 KB Created: 2020-09-20 00:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35513982266adba829f44548afc0d4bc SHA-1: 6a4d11ef656b66c1f987d38e7f89586d9e8154a7 SHA-256: 9af9b0a0158d7bad8433a6b8e25d39bd98eac09fd96847f9c49b42828282da82
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious. The embedded link, 'https://ttraff.link/wix?keyword=transparent+oil+painting+techniques', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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://ttraff.link/wix?keyword=transparent+oil+painting+techniques
    • http://fadetidi.tbstglassboro.com/uploads/1/3/1/4/131410952/517150.pdf
    • http://files.in-fashionacc.net/uploads/1/3/1/3/131398542/6807415.pdf
    • http://gujefebab.ztbaseballclub.com/uploads/1/3/0/8/130813458/vatiborox.pdf
    • http://datusotuw.drniccampbell.com/uploads/1/3/2/6/132682990/kozajefi_doruba_mogonav.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/national_anthem_song_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0480/7616/1188/files/hollingshead_index_of_social_position.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4549/files/miami_hurricanes_uniform_schedule_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/7214/4038/files/riranoviregowidazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/easy_chicken_fajitas_baking_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0457/0356/1372/files/zefujurutulijeziboxere.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/givibidaleluguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/9940/5977/files/vaxeduxaxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/nitosezerokivabupoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/gemasedamowafudukizebetab.pdf
    • https://cdn.shopify.com/s/files/1/0435/8474/9729/files/xekokekoripajulosituj.pdf
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/65098230418.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_off00006f00.bin
3259db096c60c250bed8dc6cce1348656bbfff14c6060d6f65e75bd7a7bf232f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F00 5268 bytes
font_01_sfnt_off000080e0.bin
befb6e35e29b3f86bf91e2931498c9b42ab748e1099dc8a9644b100b5fa50e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E0 10456 bytes

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