Malicious PDF — malware analysis report

Static analysis result for SHA-256 6204ac91313fef30…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 04:19:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c375c8cb102dd44f8ae0f31b15c23cb SHA-1: 968cfd6d3e1286a9e9fddfc1f61784999772ff2d SHA-256: 6204ac91313fef3020d347c9e7be1ec33ff0c8446e7cf180d8d4bf2128d78f25
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link farm. It contains numerous embedded URLs, with the primary malicious indicator being a link to `ttraff.com`, a known redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the structure and URL firings strongly indicate a phishing or malware distribution attempt.

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=grizzly+g1022+table+saw+manual
    • http://files.anabellegrigorescu.com/uploads/1/3/1/3/131384636/eb75e43224587.pdf
    • http://kopexu.silverrunceramics.com/uploads/1/3/1/6/131606457/8366094.pdf
    • http://files.koasports.com.au/uploads/1/3/1/4/131452811/pababigimosuxe_wonotirem_relikewena.pdf
    • http://files.physicswiley.com/uploads/1/3/1/4/131438180/6540385.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/56873253309.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3641/files/kuxowewubegulaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1638/0838/files/walter_scott_novels.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/67148349388.pdf
    • https://cdn.shopify.com/s/files/1/0432/8017/1174/files/menexokedisuvog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/31345969825.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/vefawazivesidufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8361/2831/files/audio_converter_windows_xp_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/ignou_ma_public_administration_disaster_management.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/motin.pdf
    • https://cdn.shopify.com/s/files/1/0437/4075/8170/files/63286660053.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7909/files/tefosajofunuwigukajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/lutejimodafisev.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/28396836544.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_off00005fb8.bin
d421c6d18636ac1bddd13ba222e27bdbaa747b78ab97b569bfdaab6c7cd1e6f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB8 5744 bytes
font_01_sfnt_off0000735f.bin
5f7e485c8686fbcdb780d279b05837fc2a8420a9c61e9a5c4d120357d2bed6f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735F 10400 bytes

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