Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16edb2f1e4e6445…

MALICIOUS

PDF

41.4 KB Created: 2020-08-03 00:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e24498061a70d5e68953cc76b107363 SHA-1: 8743c8c7eb4ea35ee11f6b587cb06d4acff5ee1d SHA-256: e16edb2f1e4e6445acb6865514a917dcd08589077b0c4e3cdc1c07d95c7c3ae5
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=asap+rocky+shabba'. Another critical heuristic identified a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the true malicious destination. The document body contains garbled text but also includes the malicious redirector URL and a Shopify URL, reinforcing the attack pattern.

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.cc/pify?keyword=asap+rocky+shabba
    • http://files.riccijustisart.com/uploads/1/3/1/4/131453855/8196007.pdf
    • http://files.shopmaryannsdanceandmore.com/uploads/1/3/0/9/130969545/wadawofuxeb-dobigef-netoruxekag-lawawizo.pdf
    • http://files.spirithalfmarathon.com/uploads/1/3/1/6/131637240/93d01.pdf
    • http://files.vickythompsonmarketing.com/uploads/1/3/1/4/131437194/1261cd49d7e1.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/14747366243.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/zosegiwutigavafuxu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/xawikawibuninojapulatali.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/calculate_entropy_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/49090208052.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72890356131.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/tifipimemagodapavemiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0077/4307/files/sandy_hook_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/munamemufepomurovag.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/18748531294.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_off000053f3.bin
333982344eb00ff6f30c69542251096e98286bb9c546dbe7caf0470cb7325a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F3 5284 bytes
font_01_sfnt_off000065f3.bin
f9e2544eeaae978770646682c77f42f1f4a13bf709681e625bd1398468d8f50b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65F3 15832 bytes

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