Malicious PDF — malware analysis report

Static analysis result for SHA-256 4647182c695df55f…

MALICIOUS

PDF

50.5 KB Created: 2020-09-02 00:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3e8c7099c6547600a9ae3366d4cad3e SHA-1: 4a3d495e0e0df5b25faff357111869b0ccfdcb79 SHA-256: 4647182c695df55fd176ac30deee57db1d6d7bd5e9c3a5864975a4d7ee210a1e
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=free+attendance+record+templates'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of a large number of external PDF links also indicates a link farm strategy, likely to improve search engine ranking for malicious 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=free+attendance+record+templates
    • https://cdn.shopify.com/s/files/1/0433/8938/6901/files/kefagitotisatomenarowotaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5255/files/67935376092.pdf
    • https://cdn.shopify.com/s/files/1/0462/4112/0416/files/ableton_live_10._1_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/certificate_of_identity_residence.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/92414401119.pdf
    • https://static.usrfiles.com/ugd/964009_165cfe438ba04ee29bb17c3a64454448.pdf
    • https://static.usrfiles.com/ugd/57c819_e4c9009dddc644bdae394ef697736eb2.pdf
    • https://static.usrfiles.com/ugd/165585_fae6d066c636414aae817e3f4bfea93c.pdf
    • https://static.usrfiles.com/ugd/46429b_52dade5e54914ad4b52fc3b4167c22b9.pdf
    • https://static.usrfiles.com/ugd/ee6770_5ae5025fc8414bd59d2a19e46e47727d.pdf
    • https://static.usrfiles.com/ugd/40512e_4c26db8f42f241029c9372a8090e3243.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/verizon_canceling_contract.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/11579887200.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84312174386.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_off00008868.bin
3c246ae8659bc5ca98bf1de9eebaae94d27b2b7ac1eee453358e336825f38cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8868 5176 bytes
font_01_sfnt_off000099e9.bin
afbd42270865e947b34a4a5d98f45788814a7dc2e5463e370ae4762bebf38257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99E9 10244 bytes

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