Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd77d18884748465…

MALICIOUS

PDF

47.5 KB Created: 2020-08-16 00:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69caedce3a64812149e64e351e6959f1 SHA-1: d18a7bf7fd560edfa5d5fdc236a34928e856bb16 SHA-256: fd77d18884748465c5ae7636d34bf468886724dc8b9204452b2f653e70b50f34
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.com/pify?keyword=pneumatic+air+motor+ppt+pdf'. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which lead to benign Shopify URLs but are likely used to mask the malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and other PDF links.

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=pneumatic+air+motor+ppt+pdf
    • http://files.manekrush.org/uploads/1/3/1/4/131437037/abba3.pdf
    • http://files.craftybrown.com/uploads/1/3/1/6/131636589/f7e46af7ff7b.pdf
    • https://cdn.shopify.com/s/files/1/0435/6423/6968/files/30271023781.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/13027253863.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/chakori_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/bimusosodaganuleta.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/50086834758.pdf
    • https://cdn.shopify.com/s/files/1/0435/9825/0146/files/exceptional_learners_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/32736930843.pdf
    • https://cdn.shopify.com/s/files/1/0450/1287/7462/files/678_786_3280.pdf
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/56591282571.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/vebivepe.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/bobcat_763_specs.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_off00007527.bin
d541be231705e4714dc00430bfa3323d047e7adcca272273da8f6f42e5663e29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7527 5092 bytes
font_01_sfnt_off00008656.bin
c29f8efa8ed2efb41bdecbf88b4c7297adb9e68a8ce315e3796591d0bf73b9f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8656 14088 bytes

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