Malicious PDF — malware analysis report

Static analysis result for SHA-256 a163637a4b88ce73…

MALICIOUS

PDF

39.7 KB Created: 2020-09-13 17:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 538b6c45b378ec72ac0f42953eb361fe SHA-1: 7e84c774b26ba53534690a66833577c9348a903c SHA-256: a163637a4b88ce7323283cbf060ebc9ef82c268334631d7b189afd8f02ac8789
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including a critical redirector link to 'https://ttraff.me/wix?keyword=boson+x+apk+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B1%25D0%25B5%25D1%2581%25D0%25BF%25D0%25BB%25D0%25B0%25D1%2582%25D0%25BD%25D0%25BE'. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The document body itself is heavily obfuscated but contains references to the malicious URLs.

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.me/wix?keyword=boson+x+apk+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B1%25D0%25B5%25D1%2581%25D0%25BF%25D0%25BB%25D0%25B0%25D1%2582%25D0%25BD%25D0%25BE
    • http://xavodape.kristineraymond.com/uploads/1/3/2/7/132740805/2508263.pdf
    • http://files.gypsyjacksfashions.net/uploads/1/3/0/7/130775191/99317bb0b7424ad.pdf
    • http://files.penniesandpounds.com/uploads/1/3/1/0/131070933/robogixuguripo_tusugabobuz.pdf
    • http://nikas.crystalroseco.com/uploads/1/3/1/6/131608016/gojeza.pdf
    • http://files.dazzlinggoddess.com/uploads/1/3/1/0/131070351/4622500.pdf
    • http://mojabuz.landscapegardenerscamberley.co.uk/uploads/1/3/1/4/131483245/lebajojom.pdf
    • https://static.usrfiles.com/ugd/0af078_b3df3124f5e74c9589fa93c390d2a05a.pdf
    • https://static.usrfiles.com/ugd/3e9e83_c1ac87bcdaad4ac8accdb8329a143d5c.pdf
    • https://static.usrfiles.com/ugd/cafc24_f128949eb73940cbb8b78f25ee878029.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/69899305173.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/lexisnexis_auto_report_dispute.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/caloric_ultra_ray_wall_oven.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5098/files/35731570347.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9272/files/89057781872.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_off00004f76.bin
7365046ceb03e9897f53cbe52811b5dee143ebd34228756aec05fbc5a5f8cada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F76 6096 bytes
font_01_sfnt_off0000632f.bin
9ea34499dffa1babe59fd12b10a7df99fe00813ec67883efc5b5817672e4111f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632F 14432 bytes

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