Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf9dc48cd04849a…

MALICIOUS

PDF

71.3 KB Created: 2020-08-29 07:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b69baa0f3e264d0452285e69749c37ae SHA-1: 823b35916353073b76ec862b11420f362a8bcdb7 SHA-256: 9bf9dc48cd04849af44bea1a669e57c3c0faafaaebe11dddafd281da17909e5c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is a strong indicator of malicious intent. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' further suggests the document's content is designed to deceive users into fraudulent schemes. The presence of a large number of external PDF links, as indicated by 'PDF_SEO_LINK_FARM', points towards a link farm strategy to distribute malicious content. No scripts were extracted from this sample.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=neverwinter+leadership+profession+le
    • https://static.usrfiles.com/ugd/b8c837_eb565f218451427fb885b22ba80aca81.pdf
    • https://static.usrfiles.com/ugd/b8c837_a91112e3b6754d5aa19605962e642718.pdf
    • https://static.usrfiles.com/ugd/b8c837_2aa2990e08b94c3dbd3e2ced9c405c57.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc0a1e00c05c47cbb3a4919759a81a06.pdf
    • https://static.usrfiles.com/ugd/b8c837_a070c81b71a24ae6b21dd10e15ed75aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_047d7581b34d4ac0aea64f87fae868b6.pdf
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/jojofujofipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/animal_crossing_new_leaf_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/bd_chaurasia_anatomy_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/attendance_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/4411_formation_guide_fifa_18.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_off0000d9c4.bin
4fee7c36b70d864e052f3600337a2fab7c7a1d8fa55f8588915638882bccf046		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 5252 bytes
font_01_sfnt_off0000ebb0.bin
a369aeea2868f39c2b4c441cb3be8a2c340f4842a67d301e088e21cb12ea2a77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB0 10744 bytes

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