Malicious PDF — malware analysis report

Static analysis result for SHA-256 06adf10507289aa1…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 18:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8537934e0d8e94b8732b30ac6a40d7d SHA-1: 98cc57a86b810c0cd3586f93f7524e4f99bc7c1f SHA-256: 06adf10507289aa107105492d2ce28ef178c432633cc55188066501e2d861db8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to what appears to be a link farm designed to obscure malicious destinations. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.com'. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the same URL as the malicious redirector.

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.com/pify?keyword=fond+de+roulement+et+besoin+en+fond+de+roulement+pdf
    • http://files.luminousleds.shop/uploads/1/3/1/3/131380094/tunewarufebekedidoz.pdf
    • http://files.adparametrik.com/uploads/1/3/0/7/130739081/5054099.pdf
    • http://files.trailer-trash.com/uploads/1/3/1/3/131383456/nadiladup.pdf
    • http://files.grassybuttegoats.com/uploads/1/3/0/7/130776046/04748502a25c.pdf
    • http://files.vettoriofficial.com/uploads/1/3/2/7/132710797/rekekavos-tixeligexewe-gudomevivefaso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/wewotoz.pdf
    • https://cdn.shopify.com/s/files/1/0436/6820/9817/files/conceptual_physics_12th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/zevudilotan.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/70934652564.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/xabuvaginonu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0730/2037/files/samumugudesiligopozakudo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/construct_angle_bisector_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/43267936332.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/lodabewomuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/mutunexozuzafomoripuf.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/63758157240.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/45381673547.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/71185753613.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_off000068ca.bin
3c52d6381ac15f1518b5e5c4789acec4f046a2d92ad6124aafab0150d0215804		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CA 5072 bytes
font_01_sfnt_off000079f0.bin
dd902779ee7775ca5e258e191d9668cae8b4ebb52639de285f8653f3a2c18cde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F0 11660 bytes

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