Malicious PDF — malware analysis report

Static analysis result for SHA-256 863e042981963bcd…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 01:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc06bc1a31092394b0694f732cbde60 SHA-1: 5ee41666f758def0f2e8ba9d94b0653a9014579c SHA-256: 863e042981963bcdf0037849461b0aebde7c5f2ee608eff0ffd49dd93c479268
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The primary malicious URL identified is ttraff.cc, which is used as a redirector. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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/pify?keyword=vba+excel+public+constant+worksheet
    • http://files.ginaword.com/uploads/1/3/1/6/131637168/rafajuli_zabex_puzawuren_nozuzosogi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/nada_value_guides_official_used_car_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/pebezub.pdf
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/52341027410.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/anet_a8_cura_profile.pdf
    • https://cdn.shopify.com/s/files/1/0433/9954/4984/files/37389439013.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/norma_oficial_mexicana_de_cirugia_ambulatoria_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/87891164633.pdf
    • https://cdn.shopify.com/s/files/1/0432/8377/5643/files/43241954568.pdf
    • https://cdn.shopify.com/s/files/1/0434/1779/6770/files/31353024151.pdf
    • https://cdn.shopify.com/s/files/1/0450/3647/0430/files/trimble_tsc2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/goludikawakolil.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/77659186631.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/
    • https://cdn.shopify.com/s/files/1/0450

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077dd.bin
05c6f712dbe2d2a7ef3bacbf963bfd1f3ca7914395cad814a6016bf6202080ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 5348 bytes
font_01_sfnt_off00008a16.bin
b222f36b1b8b6d93ee36068e3fa7aa483dba4a04ba9ea0b92f579b860f9b575e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A16 10616 bytes

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