Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c07d6c023a8f18…

MALICIOUS

PDF

41.5 KB Created: 2020-08-04 08:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 711d4e6b8ab21d1c3426b7e2c8dd53b6 SHA-1: 6e01e9969a0feebd698c531512d985e31b70c23d SHA-256: c3c07d6c023a8f183c65ac66bd2782f82f5f62081fea799743c3460cad81e389
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and topic as the redirector, suggesting a lure for users to click through. The presence of multiple external links, including the malicious one, indicates a link farm or redirection strategy to obscure the final malicious destination. No scripts were extracted from this sample.

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=synonyms+for+writing+task+2+pdf
    • http://files.psubaltimore.org/uploads/1/3/1/4/131483002/8dd5f43776f2.pdf
    • http://zokiw.sacredrites.earth/uploads/1/3/1/0/131070581/virumovitogawene.pdf
    • http://files.taupobiblechurch.org.nz/uploads/1/3/0/7/130739143/7933594.pdf
    • http://files.noticias-today.com/uploads/1/3/0/7/130776521/3725328.pdf
    • http://files.caywoodhandbook.com/uploads/1/3/0/7/130740571/digivi-laxob.pdf
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/64747379299.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/26375087182.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/student_council_secretary_speech.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/43002300543.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/82789053244.pdf
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/mass_effect_codex.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/venipiniwezifabur.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/zuvovusakipozajitaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/nelufovalari.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/54125677538.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/77963926457.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/amzn_web-_dl.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_off00006556.bin
04174d9ba5e232fc0538c92b6afd737ae8e21fc5ecc32629a347c6c83390c0d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6556 5824 bytes
font_01_sfnt_off00007931.bin
03e5a9aba6a3d193999de1288c076571b36d149036c1c36c21b70a8f1e6ee46f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7931 9404 bytes

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