Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c594af9298630bb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-30 08:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b74d4f785b81003d6ccd6238d3236527 SHA-1: cd8777eda41e4b60ed358e4b5f94670da53c0441 SHA-256: 7c594af9298630bbeac3bd633c9ef4e48e19e403af431f2a368e6800e0a25075
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. One of the primary links directs to 'ttraff.cc', a known malicious redirector. The document body, though heavily garbled, contains the same query string as the malicious URL, indicating a deliberate attempt to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=california+politics+and+government+g
    • https://static.usrfiles.com/ugd/89c6ad_a73d4c5b92a045f1b6fc18078c6057aa.pdf
    • https://static.usrfiles.com/ugd/d54300_4fe9a45931054aa88a4b17c86e097c1b.pdf
    • https://static.usrfiles.com/ugd/2f8cea_849c0b1d991d441cb253d4932ee59e16.pdf
    • https://static.usrfiles.com/ugd/b91566_8f2c28a1c293490493d3a7289d78b0b2.pdf
    • https://static.usrfiles.com/ugd/90423f_dca4d1a8d79849498bfddfb2e02d812e.pdf
    • https://static.usrfiles.com/ugd/be19e1_03be6da941bc4e31a8bfe3d0dd62058b.pdf
    • https://static.usrfiles.com/ugd/868401_8cba29448e7947b3884ebf4662bd63d0.pdf
    • https://cdn.shopify.com/s/files/1/0431/5414/5444/files/stevens_double_barrel_shotgun.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/pokemon_3d_game_offline_apk.pdf
    • https://cdn.shopify.com/s/files/1/0448/4094/3778/files/bangla_interview_tips.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30552771564.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8988/files/23413381451.pdf
    • https://static.usrfiles.com/ugd/4b7290_33afaa99b78b4791b7230a75a103089f.pdf
    • https://static.usrfiles.com/ugd/538d67_3329d3535ca9496c905df35592c6bb01.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c8325fd6a234d2886ca14550ba56567.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_off00007255.bin
27e2db842b01fe195f5750891b97f4b441a00eb583b04cf83777536c76bcd5a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7255 5440 bytes
font_01_sfnt_off000084c8.bin
ba6a744dfb5d68fba5f14b0a42336ce990f4b6aee66a982c5481fae25339fb47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84C8 10572 bytes

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