Malicious PDF — malware analysis report

Static analysis result for SHA-256 320271a28f7c0020…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 19:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5de7bf71cd1a734b53af58b14c44ec31 SHA-1: cfb0785c02ce26bd99973ff2057a886df68e7bfe SHA-256: 320271a28f7c00205eec887ddce7a786b0dbf03ec4def0636283cc50327b8356
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate document downloads, but the primary link redirects to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=advantages+and+disadvantages+of+free+trade+agreements+pdf is part of a known malicious redirector chain. The document body itself is heavily obfuscated and contains remnants of the redirector URL, suggesting a social engineering lure to trick users into visiting potentially harmful sites.

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=advantages+and+disadvantages+of+free+trade+agreements+pdf
    • http://files.rykersonforkittery.org/uploads/1/3/0/7/130739742/fokapofeje.pdf
    • http://files.blueribbonhb.com/uploads/1/3/2/7/132712116/105df5.pdf
    • http://files.cydwoq-ny.com/uploads/1/3/1/4/131438211/pexusepawoboli-lojalolewo-menozada.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/93516644838.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/ielts_academic_reading_practice_test_with_answers_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/69197629941.pdf
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/gijuruxopifegusiribebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3340/3285/files/2876682366.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/mass_effect_1_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/real_book_5th_edition_c.pdf
    • https://cdn.shopify.com/s/files/1/0448/6771/5234/files/amines_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41230052817.pdf
    • https://cdn.shopify.com/s/files/1/0431/4038/2882/files/20575212345.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/pixobowiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0314/files/wakemijokakufonixisisatu.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_off000065dc.bin
afd2412227a266123ade390827040d02f65a7dd48e219b8a190391ade9b9c340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DC 5376 bytes
font_01_sfnt_off0000781c.bin
fcc8d2f3c51c7d09b261b0ac8e905a1c18e9122d1b07c2b06d8ae3d7941bfba1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781C 10312 bytes

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