Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb1b5c1318a0495…

MALICIOUS

PDF

60.1 KB Created: 2020-09-06 03:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69f2c5f79b1cb7d7fc455a41b2589a1e SHA-1: 4965ab024e3f922ea72065121ad059a1e0f7aa39 SHA-256: 8eb1b5c1318a04955ded5fdfd6d290615d02b26322843f90718ce381c2100f26
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.club'. Additionally, it exhibits a PDF link farm heuristic, suggesting an attempt to generate traffic or SEO manipulation. The document body, though heavily obfuscated, contains the malicious URL and other benign-looking PDF links, consistent with a lure to disguise malicious intent. The presence of a callback phishing lure heuristic further supports a social engineering attack vector.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=mastercard+logo+guidelines+pdf
    • https://static.usrfiles.com/ugd/b7ed05_eb8a3d5fbc174f48a8e10dc74bd02626.pdf
    • https://static.usrfiles.com/ugd/610d21_7f6537d7c89e40f4abd21ac7d70fbf80.pdf
    • https://static.usrfiles.com/ugd/6dcf04_cd6fa075536843edaac100f54aa6cf86.pdf
    • https://static.usrfiles.com/ugd/3fc21f_7ffc45f3a4df44b0837ff5d4c706ee9d.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/88532090660.pdf
    • https://cdn.shopify.com/s/files/1/0459/9942/3647/files/autobots_hd_wallpapers_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/lesuregewit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/94939963197.pdf
    • https://static.usrfiles.com/ugd/b8c837_187e6a07cd594147978832de4c0a387d.pdf
    • https://static.usrfiles.com/ugd/6cfc61_0d78b4db856e4801ab1b85a0ca9e2adc.pdf
    • https://static.usrfiles.com/ugd/c1108c_2a90bd72a1ca48ee8ced00120f38e651.pdf
    • https://static.usrfiles.com/ugd/a86d68_79955a0fb3e647c4b7b34ad1070e0479.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_off00009ff8.bin
b3a113a30d923dac43be1e0fcee22b2eef8d6abbd1c4e5e0030fc7da9b9f8182		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF8 5328 bytes
font_01_sfnt_off0000b234.bin
7cf8d670df292f8a936af5057268ca4a34dc4c7da28af79bf7a2e0ee0da8c95d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB234 15016 bytes

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