Malicious PDF — malware analysis report

Static analysis result for SHA-256 9415f10d46ef145f…

MALICIOUS

PDF

36.8 KB Created: 2020-08-23 05:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 013995cd25c6c125ff7374dbefdf84c9 SHA-1: 62296dcba5c0b222c0ffe6382f6cb21e37e64093 SHA-256: 9415f10d46ef145f5535574e7ab855cff2bfbd99cffc655f67af318a65b0afcf
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm designed to appear as free templates, likely to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector and a large number of external links suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=instagram+photo+prop+frame+template+free
    • http://files.thestudiosav.net/uploads/1/3/0/8/130814534/bufuse.pdf
    • http://files.ralphgraciewalnutcreek.com/uploads/1/3/2/7/132710563/tugim.pdf
    • http://dediji.batrssocal.com/uploads/1/3/1/3/131379803/masiwamelu.pdf
    • http://tezomer.aiacademy.net/uploads/1/3/2/7/132712336/duvasanaloj-nerexuge-jozar.pdf
    • http://fewomobij.mrspirritano.com/uploads/1/3/1/3/131398564/9901461.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/itv_news_reporters_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/makanexuritefamofadusif.pdf
    • https://cdn.shopify.com/s/files/1/0462/7929/5125/files/vopelunupavu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/advertisement_management_system_project.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/buddhist_mantras.pdf
    • https://cdn.shopify.com/s/files/1/0457/9200/2204/files/segubimewewebep.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/nonamejiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9653/files/3045831514.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/ssx_tricky_ps2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/anticorps_antiphospholipides_et_grossesse.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_off00005234.bin
7390e763d2fcf2575eb9fb92ae98fce69a4e23bf2754bf168c1717b96f353bd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5234 5252 bytes
font_01_sfnt_off000063e0.bin
bf2f0546e868e973cb0e8a7742edf51ce4a44326b11034815b8eae80ca17632e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63E0 10004 bytes

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