Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc6b515000b45535…

MALICIOUS

PDF

36.3 KB Created: 2020-08-12 13:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41d883a2696a3078948e88a000f71414 SHA-1: 9853ae0964871731f8c059fa3dd87dfb87a2da95 SHA-256: dc6b515000b455357a56f98818a31e62d6c74024f72779493346304f98d13512
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.cc/pify?keyword=autobiography+of+yogi+in+tamil+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to a book title and the PDF's creation tool, reinforcing the lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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=autobiography+of+yogi+in+tamil+pdf
    • http://files.markjamescabinetmakers.com/uploads/1/3/1/4/131453989/funevasow.pdf
    • http://files.galtfarmsgenetics.com/uploads/1/3/0/8/130813860/3578955.pdf
    • http://sovuj.fastflyingmarketing.org/uploads/1/3/0/8/130874277/laxebozisipor.pdf
    • https://cdn.shopify.com/s/files/1/0434/4299/5367/files/xenavif.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/67029752245.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/barron_s_math_workbook_for_the_new_sat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/bacteriuria_asintomatica_en_embarazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/tejunawaxowawofojobexaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/araby_theme.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0447/1137/9097/files/spelling_bee_words_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/kolowosagejubibomarojetan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/98319323801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9583/5295/files/davoned.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_off00004f01.bin
1370f4db2447f6604fa7afcf8e82c659f90ba5379f875ed56e841bceece05ea9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F01 5508 bytes
font_01_sfnt_off00006195.bin
4260333b34fd9ac3f47f63ea4c36ec429efda4edbb3e4adc509f1308165ca87c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6195 10228 bytes

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