Malicious PDF — malware analysis report

Static analysis result for SHA-256 a431adaaf7ebd145…

MALICIOUS

PDF

40.7 KB Created: 2020-08-28 02:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e965780053bf1345a875bc8c6cc91e7 SHA-1: 190795e8a6872872a3a53a648fcff0facdf46170 SHA-256: a431adaaf7ebd1455e2504366f6c893511caad22c2edd861d4897f82cd23a151
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains the URL https://ttraff.cc/pify?keyword=dell+n4050+driver+support, suggesting a lure related to driver support. This redirector likely leads to further malicious content or exploits.

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.cc/pify?keyword=dell+n4050+driver+support
    • http://files.atxvegans.org/uploads/1/3/0/9/130969654/4f2d1289fbd93a.pdf
    • http://fudofuvi.aroundtheworldin800days.com/uploads/1/3/1/4/131453574/giwojo.pdf
    • http://files.saraelizabethtaylor.com/uploads/1/3/0/7/130775734/6015008.pdf
    • http://fetemaje.nicoleangelique.com/uploads/1/3/2/7/132740649/b4448c5.pdf
    • https://cdn.shopify.com/s/files/1/0440/6296/5912/files/47682510760.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/liwusisexomilipixo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/metogi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/xitelejoramev.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/extracurricular_activities_furry_game_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/fafanuxob.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/avg_internet_security_2019_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2760/3354/files/jamivojazuxide.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/patolivozi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/wokuge.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/jepogalabikevolok.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_off0000538a.bin
4f371f1303109ea37161389e8af058020dfe4f9878861dd7536cc9a80c34fcd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x538A 5156 bytes
font_01_sfnt_off00006539.bin
c2add5ce0a11b955d1dd58a9138673e2ebc29e1293afdf588e7daab3552f0fba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6539 16704 bytes

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