Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a3d8bd8e02eb27…

MALICIOUS

PDF

45.7 KB Created: 2020-07-30 23:05:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74f0457967c30f48d522c4c6ddeb404a SHA-1: d53d8c2acf70bfa0d6aac56aab869d9deed00caa SHA-256: a2a3d8bd8e02eb2725733855479f96b12b047cc26abafd4be745154c8c95d16a
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'bivariate data examples pdf'. The primary malicious URL identified is ttraff.com, which is likely used to redirect the user to a malicious site or download further malware.

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.com/pify?keyword=bivariate+data+examples+pdf
    • http://files.maritimeheritagepress.com/uploads/1/3/1/4/131454221/0b10d.pdf
    • http://files.somersetsnowsportsservicing.com/uploads/1/3/0/7/130739833/kowomakulame-rixelagi-wokativubovika.pdf
    • http://files.kencarder.com/uploads/1/3/1/8/131871704/9606093.pdf
    • http://files.dynamicathleticcenter.com/uploads/1/3/1/0/131071114/ruxajuv-tawarij-divuweno-vudiluxuxukime.pdf
    • http://files.quillandpapercalligraphy.com/uploads/1/3/1/4/131406781/zaduvufunefujikeb.pdf
    • http://files.quillandpapercalligraphy
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/ruvum.pdf
    • https://cdn.shopify.com/s/files/1/0428/7270/1095/files/paduru.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4965/files/safujesogaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0151/0045/files/17680702525.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/59374981852.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/sirapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/36699488791.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8998/files/41724367184.pdf
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/samuvojel.pdf
    • https://cdn.shopify.com/s/files/1/0434/5715/1129/files/42876941722.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0434/1956/6231/files/46688170292.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_off0000765b.bin
7bbdc947d8edb403c047e984c165919a5bb2c5f44de5667e2c7ffca052453238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765B 4936 bytes
font_01_sfnt_off00008727.bin
f3b0e15ade4f62f95a4876fbed3e051f9867dc39e0bc5ee7089a6434ea2ae9ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8727 10188 bytes

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