Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a88861dcd6b262…

MALICIOUS

PDF

33.3 KB Created: 2020-08-02 11:50:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdfd7fa427d13ed5322ba7ad3870b316 SHA-1: 7813108f589615baa4ff378fed7eed5b6e273c00 SHA-256: d7a88861dcd6b26217c1638c1c9e227ce8467e400f9929b7c1e01154c73c1bdf
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. The document body and embedded links suggest a lure for downloading a CCNA PDF, but the primary link redirects to a malicious domain. The PDF also hosts a large number of external links, many of which point to benign Shopify URLs, but the presence of the malicious redirector is the primary concern.

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=todd+lammle+ccna+200+120+pdf+download
    • http://files.allisonbellucci.com/uploads/1/3/0/9/130969652/dukenimovud-sunewiwagax-ginarazodesuzut-fopodoxujoxudo.pdf
    • http://files.moniquescakes.com/uploads/1/3/0/9/130969545/3700071.pdf
    • http://files.pierrevanschalkwyk.art/uploads/1/3/1/0/131070212/dopab-gubimi-xilusakebapukik-pazokor.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/xebudagolipukebewabu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0481/3721/files/95133667897.pdf
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/86061821695.pdf
    • https://cdn.shopify.com/s/files/1/0435/4283/9455/files/burn_meek_mills.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/12935662144.pdf
    • https://cdn.shopify.com/s/files/1/0438/7412/3944/files/practical_reliability_engineering_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/31671532796.pdf
    • https://cdn.shopify.com/s/files/1/0433/8532/3683/files/najokemedoxokaxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/91893701803.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_off000041a8.bin
e9cc38d0deb3fc10c67e77f8be6c0eda5712006e5d84b73262025a02e8df6cc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41A8 5392 bytes
font_01_sfnt_off00005411.bin
f3ec6cc1b37dfc5a6b800ebefcbfd2ad8edc501c97b649503e45c51bd09b0ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5411 10680 bytes

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