Malicious PDF — malware analysis report

Static analysis result for SHA-256 94904a011a4fb6d1…

MALICIOUS

PDF

45.0 KB Created: 2020-08-10 22:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c63e467c887124ebec8287db37e2870b SHA-1: 84b718f2a3a154910cbef3358d350d28fc91aa38 SHA-256: 94904a011a4fb6d12608150ec6c6641fa0f3807be54de23d133f86e7856f6133
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary link directing to a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.ru/pify?keyword=logiciel+pour+fusionner+plusieurs+pdf', suggesting a lure related to PDF merging software. The ML classifier strongly flagged this PDF as malicious. The presence of many Shopify-hosted PDF links, while individually benign, contributes to a link farm pattern.

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.ru/pify?keyword=logiciel+pour+fusionner+plusieurs+pdf
    • http://files.getmarketready.com/uploads/1/3/0/7/130775623/fofaropolowafa.pdf
    • http://files.newworkingworld.com/uploads/1/3/0/8/130814229/noxidutinasudiwop.pdf
    • http://files.wolfhunterjjc.com/uploads/1/3/1/4/131411596/8f667849bdc2a3.pdf
    • http://files.mnnfnetwork.com/uploads/1/3/2/3/132303019/foxipeluvas-nekegafadepaxa.pdf
    • http://files.ennoblesolutions.com/uploads/1/3/0/9/130969046/af46fa042851e5d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nejoxalivivurotuzepebibus.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/wajorigulinoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/zapajaturuviperibowir.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/73588269506.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/kuwizikesejatowarupozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/fefokovarefebagar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/69352832486.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/tetegabojojuvudovezana.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/sisamem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/98562876628.pdf
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/96787126856.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062a9.bin
b0d54fcee8a426bfeeb922002b4ab6f01fddd25dd9541a2962e26c6d479045ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A9 4856 bytes
font_01_sfnt_off00007339.bin
be853dcd408379ddd0f9c04bfb13e1c5ae7663d4756e9cd4fa8fdf8ff2d58a6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7339 11408 bytes
font_02_sfnt_off000096e6.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E6 4324 bytes

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