Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3900bd34a1ffed2…

MALICIOUS

PDF

48.5 KB Created: 2020-08-28 15:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 813d952516fabc3eca23501eb19e69c1 SHA-1: 8a22e25700a5327ca3933daeb37ffbb80bb2c829 SHA-256: f3900bd34a1ffed205de3a7b95ee81ec2fa2f33f65c64d4832c1f055d18c15b3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted, and the PDF structure itself is the primary vector for the attack.

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=buddhist+books+on+grief
    • http://sonuwa.sonyaparra.com/uploads/1/3/0/7/130775478/burunazabizosukaxiv.pdf
    • http://files.dramaaroundtheglobe.com/uploads/1/3/0/9/130969761/4681863.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/completion_of_probation_period_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/vuvogosepafabetunowob.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/complete_babylonian_talmud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/76871145215.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/dodozutetafofafetizofagej.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/battle_of_antietam_apush.pdf
    • https://cdn.shopify.com/s/files/1/0430/1907/5737/files/the_pretty_reckless_albums.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/fapamegoxetuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/99149033163.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/wedding_escort_cards_template_free.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_off000080e4.bin
15e8af6a773f7d10e397296d5726aabe6ca84cbf1edbbbf9d5f51c333acde3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 5180 bytes
font_01_sfnt_off00009272.bin
582663328b22371aecd6c9cd184e51c1b6e0c6b7cff154e0c8a1f502df5a785b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9272 10280 bytes

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