Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eb4130b9c198b83…

MALICIOUS

PDF

33.8 KB Created: 2020-08-27 22:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7db66fc2e133847552d9a5efcb87a8b1 SHA-1: 5199ddba8b41a59d2c2662834547dafcf411cefc SHA-256: 3eb4130b9c198b83d2f9d021841242732022405b9800ebce2f524e41bce9b184
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a link to a technical manual. The document also contains a large number of links to other PDFs hosted on various domains, suggesting a link farm or SEO poisoning attempt. No scripts were extracted, but the presence of the malicious redirector and the link farm indicate a phishing or malware distribution attempt.

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=aisc+steel+construction+manual+14th+edition
    • http://wepusegi.sp-arms.com/uploads/1/3/1/4/131453718/jefojowatinizi_vojifizas_zizawofelilebad.pdf
    • http://files.act-lab.net/uploads/1/3/1/8/131856134/e4c718.pdf
    • http://sesivux.kingfisher-strategy.com/uploads/1/3/2/3/132302868/9874854.pdf
    • http://ragura.hoolants-beton.com/uploads/1/3/2/8/132814930/40e989e.pdf
    • http://tilagid.midsouthdistributingusa.com/uploads/1/3/1/4/131482993/jegolizapajuke-leridi-rajeka-kowakifisojedim.pdf
    • https://cdn.shopify.com/s/files/1/0433/3967/7855/files/forovurolomofiwemej.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/mizuponelopamawepada.pdf
    • https://cdn.shopify.com/s/files/1/0440/6578/3958/files/historia_de_la_brujeria_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/9049/4119/files/blitzer_algebra_and_trigonometry_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/40473001787.pdf
    • https://cdn.shopify.com/s/files/1/0440/8298/7158/files/1977_dodge_motorhome_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3921/files/walalenejanapipe.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/xuxovakopaxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/sevubafokivupebenife.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_off00004878.bin
ee3715af94db9cda2d9c6bb2b2ddd1bd03bacd82d4a2fb0d9c0847e882e5bf5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4878 5308 bytes
font_01_sfnt_off00005a50.bin
39303ca4fcf31da86a13da6274f5168ed3b3c87449c701ab1a6722068293d533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A50 9376 bytes

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