Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa752ca6571fbd1…

MALICIOUS

PDF

52.0 KB Created: 2020-08-08 23:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44d205139d9b3f63b4da637de281decd SHA-1: 15b4427872d349af1f4b1cff71d16d66794180e9 SHA-256: 7fa752ca6571fbd1f76cc06522083f1e4c08e64743f0477b7bacae9a1982eb46
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious redirector URL and a benign-looking Shopify URL. The primary intent appears to be redirecting users to malicious content via the ttraff.cc link.

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=yasin+sharif+pdf+download
    • http://files.mattieullrich.com/uploads/1/3/0/9/130969565/nemaropalidifun.pdf
    • http://files.jessicasnyderedits.com/uploads/1/3/2/7/132740892/8852695.pdf
    • http://files.vickigunter.com/uploads/1/3/2/6/132681336/9690444.pdf
    • http://pekepupi.maconcountyveterans.org/uploads/1/3/0/7/130738720/nojemigukumotitajug.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/49663442976.pdf
    • https://cdn.shopify.com/s/files/1/0437/2152/3349/files/acordes_de_guitarra_para_principiantes_canciones.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/emotional_development_theories.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/96187134572.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8757/files/benzetacil_bula_profissional.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/12398999689.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/naxilovik.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/wawefunopaposisaxusemofe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/battle_gear_2_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/20622328785.pdf
    • https://cdn.shopify.com/s/files/1/0437/8175/0941/files/22384569155.pdf
    • https://cdn.shopify.com/s/files/1/0428/5795/5487/files/p90x_classic_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0432/2561/2450/files/76751575934.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
stream_005_off00009b30.bin
cc710aa2010c7bde279670aaa8a40c41b6760723fda0f7dc773c41ba9f2eadeb
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9B30 22684 bytes
font_00_sfnt_off00006730.bin
a5b5312e6b4d11d99659d8cae4ffc6801695e436a608398c7679e66c30a4e829
pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 5180 bytes
font_01_sfnt_off000078dc.bin
4534a62f70ca89d5b1cd4dec94d17c0a6fae41988c0dcc6e23c645278a9cd140
pdf-font-stream PDF embedded font (sfnt) at offset 0x78DC 9976 bytes