Malicious PDF — malware analysis report

Static analysis result for SHA-256 20157441f7153469…

MALICIOUS

PDF

50.1 KB Created: 2020-08-19 03:25:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb124d742b5c09ddbcf3dabd4b7f3b8 SHA-1: 081685af2191c2a7b69993ec4ab56cc892719faf SHA-256: 20157441f7153469145dbcccc182abd092cc89b7ba1bd3018e4917439539e4c4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=brushless+dc+motor+controller+datasheet'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for this assessment.

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=brushless+dc+motor+controller+datasheet
    • http://nofafazaf.jolvi.ca/uploads/1/3/2/8/132814718/9434485.pdf
    • http://files.katherinebelisle.com/uploads/1/3/1/3/131379506/rufofu.pdf
    • http://files.mudgeeyogacentre.com/uploads/1/3/2/6/132681513/nudupa.pdf
    • http://rijibol.vixenrun.com/uploads/1/3/0/9/130969060/kubivonomal_tirakefopulav_bilugiforolo_wibonuzog.pdf
    • http://files.heartlandusgaa.com/uploads/1/3/1/3/131380495/96ce302.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/megujisabekotedaku.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/5474565144.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0135/files/the_warren_buffett_way.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1660/files/kelavironorutofi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/lapusogaxijez.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8782/files/learn_english_phrases_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/5335/1066/files/12517295011.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/psychology_david_myers_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/75153086867.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/
    • https://cdn.shopify.com/s/files/1/0430/5335/1

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6c.bin
a1c44c0444956d5ba957535c04616240bcd884371b6a2885e60c2b1828d478ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 5064 bytes
font_01_sfnt_off00007c74.bin
0bb8830a25cbbefdf000efc1138227abd194962353e55375c02f56c3267ccd6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C74 15780 bytes
font_02_sfnt_off0000acfb.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xACFB 4324 bytes