Malicious PDF — malware analysis report

Static analysis result for SHA-256 475ac0dd8f347b63…

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 16:36:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6dcff3f13b5efd09d4281f4e6a76c37 SHA-1: 81a3637ce7cceb56f1dd381405f8771181dd410b SHA-256: 475ac0dd8f347b632282d19cd06b8023d3e173d08c493ef282915988fac1b98d
128 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, ttraff.cc, which is flagged as malicious. The document body and embedded links suggest a tactic of creating a fake academic resource page to trick users into clicking the malicious link. The PDF also contains a large number of links to benign Shopify domains, likely as part of an SEO spam campaign to improve the ranking of the malicious link.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=a+c+kapoor+principles+of+political+science+pdf
    • https://cdn.shopify.com/s/files/1/0447/1321/4108/files/les_nergies_fossiles_et_renouvelables.pdf
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/59891713396.pdf
    • https://cdn.shopify.com/s/files/1/0431/4605/1744/files/poultry_feed_formulation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/clausura_2020_calendario.pdf
    • https://cdn.shopify.com/s/files/1/0455/3238/1349/files/java_7_u_80.pdf
    • https://cdn.shopify.com/s/files/1/0446/7264/7331/files/cognitive_behavioral_therapy_techniques_and_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/midaralitenokefowojej.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/34990783295.pdf
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/mizeresuwo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/jesus_bleibet_meine_freude_choral.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/30365741674.pdf
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/businessman_movie_bgm.pdf
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/vebikitejidekabopizudebi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/wuruvix.pdf
    • https://static.usrfiles.com/ugd/b8c837_477f3ffc5768402d8ab933cb0032aa9c.pdf
    • https://static.usrfiles.com/ugd/8de238_b25b68a01c27416f821768311cb43aae.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8c29c79a7f448749bddf96ccd054b96.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_off00006bee.bin
1a251db620a1afd21e04239b06a53883399fb3669504dc5012371d23201d5152
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 5200 bytes
font_01_sfnt_off00007da5.bin
a6291961c29c9e7f2dcb4f7574c5764f4dec63359e114365177629aefe11833d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 10340 bytes