Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a743e54dc13dac…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 22:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6134fd25bcb3a92cd4497ed7e8d9d47c SHA-1: 9488edd5cdf04f29f647630c9233d8f955dc4bd2 SHA-256: 42a743e54dc13dac4cc5c97c38804879c452ba3a32a71e73a48832fbf1667b2c
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure for free music. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, many hosted on Shopify. The primary malicious link is the one pointing to ttraff.com, which is likely intended to lead the user to a phishing or malware distribution site.

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=music+free+to+phone
    • http://kelas.cutediner.com/uploads/1/3/1/4/131408280/4fc56952.pdf
    • http://files.massmediamaker.com/uploads/1/3/0/9/130969312/972194b424.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/ambarish_kannada_movie_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/witisorepilujibibonuwofip.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/95282406324.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/98901082050.pdf
    • https://cdn.shopify.com/s/files/1/0459/3290/4615/files/zofizubefotuwix.pdf
    • https://cdn.shopify.com/s/files/1/0435/8488/0798/files/ruturujowolujotoletudido.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/sovenuzepedilelizotij.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/sixinela.pdf
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/zombie_catcher_hack_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/5073/6533/files/2015_international_building_code_study_companion.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b8.bin
b2b17e94c08c7863149f2c0ca75b01170449b3347e17dd1bf22fb31a35a91ee1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B8 4748 bytes
font_01_sfnt_off000075d8.bin
cf44f68eb0823c622914dd4d332ee72abffb1bf06be6fb5cb6110a55906dd0b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D8 10008 bytes
font_02_sfnt_off0000980f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x980F 4324 bytes

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