Malicious PDF — malware analysis report

Static analysis result for SHA-256 5efebe6635a6c43e…

MALICIOUS

PDF

51.9 KB Created: 2020-07-25 09:58:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c26dfe979650928e1ff763f17596332 SHA-1: 00077ccb33bb7a87bcb1e7399f6254bab3cc31ee SHA-256: 5efebe6635a6c43e94b5ced703d646dd889fe5b9386b39a88e1aa957acf258c8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links pointing to external resources. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of malicious links and the overall structure suggest an attempt to redirect users to potentially harmful content, likely for phishing or malware delivery.

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=armorseal+650+data+sheet
    • http://files.stpeterslimpsfield.org/uploads/1/3/1/4/131454106/katuxeva-petukoresabek-wujudipuxu-jemajusiw.pdf
    • http://files.authortomanthony.com/uploads/1/3/1/4/131411199/2111746.pdf
    • http://files.benefit.live/uploads/1/3/2/6/132695455/285406.pdf
    • http://files.spacecoastchristianacademy.com/uploads/1/3/1/0/131070485/253717e1dc0a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6367/0944/files/gogufeneliwemiweko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bodadajigewodozisidezufe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3318/8759/files/wurasavodofoduxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/94793085326.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/xerenolujoregeriko.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/48641723073.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/vixopukotugemubojis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/62246159925.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/76542057407.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/xaniwirinev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.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_off000080c9.bin
5433816b3f3239bd028831d862b6f88f59b9e72cff6506f541fcc52977884bb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C9 5108 bytes
font_01_sfnt_off00009225.bin
e5699602c1a84d557fa1ad0f0397f7921c597c0752e0a5278ee9ee3d75172a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9225 14552 bytes

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