Malicious PDF — malware analysis report

Static analysis result for SHA-256 f34193313661b74a…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 07:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5c50e85bb9e4c8b8d7eaa27ca952b3f SHA-1: 2f3a6c34939a86cd5205d755f7bde6c4c36f8d42 SHA-256: f34193313661b74ad119184e356a54a74033381870f44dcd6d005ec7a8c7fa99
148 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised within content related to 'Atk motorcycle parts'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify domains but likely serving as a distraction or camouflage. The presence of a critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing strongly indicates an attempt to redirect the user to a malicious site. The SE_INVOICE_LURE and SE_CALLBACK_LURE heuristics suggest a social engineering pretext, possibly a scam or phishing attempt, to entice the user to click the link.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=atk+motorcycle+parts
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/growing_succulents.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/vogunilibenuvovevizik.pdf
    • https://cdn.shopify.com/s/files/1/0436/0005/2387/files/fizofagulojokivamawelu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0219/9203/files/brahmanda_puranam_in_telugu_free_download.pdf
    • https://static.usrfiles.com/ugd/0df15e_10cbe2cd952f47059be914662c2be0aa.pdf
    • https://static.usrfiles.com/ugd/1b8612_82ed80ea416c4a729f8a21079105f4b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_34adb5eaa6b245c2b452b7330120860a.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3873/files/48417908251.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/autodesk_fusion_360_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/8679/0304/files/98470768405.pdf
    • https://cdn.shopify.com/s/files/1/0439/9028/6494/files/design_home_mod_menu_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/63697771287.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/atingerea_lui_juliette_volumul_2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b1e.bin
bb65c82ac979e46f0b9670ffaf95dd85147bb4ccf3cc690d62bf448b43f0d91d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1E 4868 bytes
font_01_sfnt_off00005bb0.bin
4e4e0f15bdcd86a628b027acf113b67dcd3692f5940582adcbac51ece4a250ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB0 10752 bytes
font_02_sfnt_off00008069.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8069 4324 bytes

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