Malicious PDF — malware analysis report

Static analysis result for SHA-256 445d293823e2395a…

MALICIOUS

PDF

36.1 KB Created: 2020-08-03 03:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 203688a62f6a992039dc689fee84f06e SHA-1: 8d2ffac84d073a4867569ab6239b4853b1465507 SHA-256: 445d293823e2395aadd95d406629e3ff1c827525a09be96785ca2521ac434876
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=goodmann+and+gilmann, which is likely used to redirect users to a malicious site. The presence of numerous embedded links, many pointing to shopify.com domains, suggests a coordinated effort to distribute malicious content. No scripts were extracted, but the PDF structure itself is designed to lure users to external resources.

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=goodmann+and+gilmann
    • http://files.womenofnote.ca/uploads/1/3/1/4/131453950/b64c76.pdf
    • http://files.juliemaeseele.com/uploads/1/3/1/4/131437636/pigerane.pdf
    • http://files.tsabs.bg/uploads/1/3/0/7/130775737/pafep-vubix-wiwirod-bibeb.pdf
    • http://files.velankannisocal.org/uploads/1/3/1/4/131407952/bfbb80.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/woxekedipavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/59406057790.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/vugiboxijulu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/76770949859.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/morewu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/raturibibufofoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/tepisodesivejetujila.pdf
    • https://cdn.shopify.com/s/files/1/0435/8445/4817/files/85516826477.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/fitefikozutizenegono.pdf
    • https://cdn.shopify.com/s/files/1/0439/0617/1048/files/25761995545.pdf
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/59406723854.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6271/files/xezinorexuvabikodikuz.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_off0000517e.bin
c604bf63cf4c6696bb2e072ee8e6586c08621c527fa5e7b781d64af605a17c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517E 4900 bytes
font_01_sfnt_off00006219.bin
de58d7462ffa7eacdebaefbd9f759e9d78effa2f1c484c189483112b2facffdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6219 9828 bytes

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