Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbb140c8f23ffce…

MALICIOUS

PDF

54.7 KB Created: 2020-08-17 10:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f2df7a2714c55facf708be08a2cda12 SHA-1: 69320e0a6abff61f7911a60520e8cc6439493e93 SHA-256: fdbb140c8f23ffcef46d4e910aeac396f9fd179e5b22c17a28b74787b2f03fb9
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection tactic. The presence of a 'download button' heuristic further supports the lure of clicking a link. The primary malicious URL identified is ttraff.ru, which redirects to a keyword-specific URL. The document body contains garbled text but includes the malicious URL and several Shopify-hosted PDF links.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=ghd+sports+live+apk
    • http://files.campneuro.org/uploads/1/3/0/9/130969993/9c25ddfc8c842fa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/jaxazifukiro.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/57398070784.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/bijepuduxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/77142450070.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/wesufel.pdf
    • https://cdn.shopify.com/s/files/1/0431/4343/0305/files/betakebakedaduv.pdf
    • https://cdn.shopify.com/s/files/1/0440/5982/0182/files/lululepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/geneva_airport_shopping_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/misebok.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/padujofevebif.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006495.bin
d7a74a8f7f5b6061d1704e49d55b25e97137b941398fa138ccd077d4d208d331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6495 3136 bytes
font_01_sfnt_off00006fc1.bin
8ea3759e915afcbf9b9b40b8be96c04b9b804bff53d6d24844c6e1b03ae11aa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC1 5200 bytes
font_02_sfnt_off00008170.bin
b5597e4fed04db6cea804bd371906bad2881eaade16ad0e2e00b97cc137a878e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8170 5436 bytes
font_03_sfnt_off000094df.bin
5440f4b106fbc0c8678d4edab7ad5a36635bdbe758134ea85571dfafb8946286		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94DF 9996 bytes
font_04_sfnt_off0000b73e.bin
4e16a01ba01ffeace7124abaf54e21934a1d52f554f4e2c2e4bf5a120db54e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB73E 16340 bytes

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