Malicious PDF — malware analysis report

Static analysis result for SHA-256 4841ff190e2eacbe…

MALICIOUS

PDF

71.3 KB Created: 2020-08-14 12:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818bf20901af46d49905a6ff7ee7e64d SHA-1: 45cbb64e70dad1859ad28a53b15a3a614c6effd5 SHA-256: 4841ff190e2eacbee33973a225effa38379a1471dca4ad54d714f4f9e2fb1490
120 Risk Score

Malware Insights

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

The PDF file contains a link farm with 30 external PDF links, many hosted on Shopify. The primary malicious link, 'https://ttraff.com/pify?keyword=wow+classic+sungrass+farming+guide', is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a social engineering attempt to trick users into clicking the link for a fake guide.

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=wow+classic+sungrass+farming+guide
    • http://files.alnwickroundtable.co.uk/uploads/1/3/1/4/131406800/6649ef.pdf
    • http://files.robertuspudyanto.com/uploads/1/3/1/6/131607093/budatofanuno.pdf
    • http://files.lizboultonart.com/uploads/1/3/1/4/131483147/c62825af.pdf
    • http://nomuxu.guitarhympia.com/uploads/1/3/2/6/132682646/lefijitejegidan.pdf
    • https://cdn.shopify.com/s/files/1/0431/7993/3862/files/veburuboxakuse.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8898/files/lodigolowetimewokodefup.pdf
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/badminton_rules_in_marathi_language.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/47988406554.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/kisowokexokulunewuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/vakapaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/dupila.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/biochemistry_jm_berg.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/dusela.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1152/1181/files/12500326117.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/18223915213.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/charlotte_bronte_villette_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/bugsy_malone_music.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_off0000d9e1.bin
0b0fdda0971d530a4648ac797071931567e149de5f098cd39fd2e92f85f3aeea
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E1 5448 bytes
font_01_sfnt_off0000ec60.bin
63ef1407577b8d461d915dd2eb9fc5fabbe6bf3a07294e72a08e24d0cfbc816c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 10420 bytes