Malicious PDF — malware analysis report

Static analysis result for SHA-256 4244d1f25653eb69…

MALICIOUS

PDF

38.7 KB Created: 2020-08-26 14:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78fcd59702037af5ad30593ca840bfcb SHA-1: 3bdc3cd2f25a9f5499e355ebbe5e22746d82f0b8 SHA-256: 4244d1f25653eb6961f8d85e0a0a04c58495558a5de630756daef23f5fe31358
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure at 'ttraff.com'. Another heuristic flags the document as a link farm, suggesting an attempt to artificially boost search engine rankings or distribute content through numerous external links. The presence of a link to 'ttraff.com' indicates a likely attempt to redirect the user to a malicious site for further exploitation or credential harvesting.

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=hold+you+down+song+download+mp3
    • http://povok.granthamfoundation.org/uploads/1/3/2/7/132740585/zijokunufabalil_xawebezejed_matemonagaba_rotopabukademin.pdf
    • http://jibejoj.linkesculpture.com/uploads/1/3/1/4/131406893/fazonu.pdf
    • http://xejitizun.merakiandcoffee.com/uploads/1/3/0/8/130814328/zolepojatifosonejuf.pdf
    • http://wexasumo.redwordediting.com/uploads/1/3/0/8/130814328/c70ada79a6.pdf
    • https://cdn.shopify.com/s/files/1/0435/3120/6808/files/dua_book_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0436/9573/4937/files/79412370330.pdf
    • https://cdn.shopify.com/s/files/1/0462/2893/0709/files/icann_gtld_applicant_guidebook.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/crossword_puzzle_answers_wall_street_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/61676617230.pdf
    • https://cdn.shopify.com/s/files/1/0431/6721/9878/files/57238350636.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/asymptotes_problems.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/dikezomuborawuxar.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/restore_bookmarks_android_browser.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_off000056cb.bin
d80db6db9d1500bcdb0b8effd5e2b0a27efec6bcceb5eae0321f36ae681c33e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56CB 5504 bytes
font_01_sfnt_off0000698a.bin
2a597ae01f607badae474b3cc0a75c6b5bfbee3a41bbcc187848b16b79bb8448		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698A 10724 bytes

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