Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edda2e36dc7f957…

MALICIOUS

PDF

43.8 KB Created: 2020-09-06 21:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92f0b59dc9eb7799c09ce5d4cf66ab27 SHA-1: 71c8f54156330723ee5fc236671d74572f3f7b15 SHA-256: 2edda2e36dc7f957c633a4227b02e0580c655dad699d392c732deecddb995f0f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=audacity+2.+2+2'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The presence of a PDF link farm heuristic further supports this, suggesting a broad distribution attempt. No scripts were extracted, and the document body is heavily obfuscated, but the embedded malicious URL is a high-confidence indicator of malicious intent.

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.club/wix?keyword=audacity+2.+2+2
    • https://cdn.shopify.com/s/files/1/0432/3311/6317/files/57426119003.pdf
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/cell_cycle_mitosis_labeling_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9401/files/u_bahn_netz_berlin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datufezon.pdf
    • https://cdn.shopify.com/s/files/1/0428/4248/8998/files/java_programming_questions.pdf
    • https://static.usrfiles.com/ugd/d162e3_49bb0928462a4e688e1c8ed5f3c8c5fd.pdf
    • https://static.usrfiles.com/ugd/40b9e6_c15592c65edf449ca42970fda341afea.pdf
    • https://static.usrfiles.com/ugd/01bc73_66446b1d58f4468d993c5fc24ffec3cd.pdf
    • https://static.usrfiles.com/ugd/7a359d_864021ac3cf0454c9f8cebe38b8f2c70.pdf
    • https://static.usrfiles.com/ugd/769f78_0e5421dc4d7846d1a66fd86c271fca49.pdf
    • https://static.usrfiles.com/ugd/b8c837_55dcb8d9da9740ba95e7494f69c9a316.pdf
    • https://static.usrfiles.com/ugd/b16523_ff03b807ce784f96abd4815f1774888e.pdf
    • https://static.usrfiles.com/ugd/83f04e_16ced77bca224bfd883368799d1f1c04.pdf
    • https://static.usrfiles.com/ugd/2b3f46_c5176faaffc8474b9d07346a76f85695.pdf
    • https://static.usrfiles.com/ugd/9a242c_ec4a213e2e254c62bc4a1738565663c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4b78f0c91ff4000a4e5cf4d52f44875.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_off00006f15.bin
20047cd00bbcb47e55663b065a2a08e5c4600acf9dadae6004ddf1246500d225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F15 4884 bytes
font_01_sfnt_off00007fd8.bin
2460ea47329758caaa0fa9de4bc48b5ff6b1678592c51fcf40a32e28aaa2f4c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD8 10176 bytes

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