Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bf1c6bf7f1714a…

MALICIOUS

PDF

37.2 KB Created: 2020-08-13 03:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54b1d5d77dd078ef55d22574140a0369 SHA-1: 867ae94b822290f52a0a2016e649951ea16e1cbe SHA-256: c1bf1c6bf7f1714a3895e4ee81b5100d7173f305401781c86e453c13cfd60bde
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary malicious link identified is https://ttraff.ru/pify?keyword=handbook+alternative+energy+pdf. While no scripts were extracted, the structure suggests an attempt to drive traffic to malicious or spam content, potentially for SEO manipulation or to lead users to phishing sites.

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.ru/pify?keyword=handbook+alternative+energy+pdf
    • http://files.agoldenphd.com/uploads/1/3/1/1/131164399/1b1dc9a9.pdf
    • http://files.hiddenhillswissies.com/uploads/1/3/1/4/131453312/nodajununo_pisafowubumefa.pdf
    • http://files.taupakikarate.co.nz/uploads/1/3/1/4/131437680/9025311.pdf
    • http://gewiwo.phoenixrpgtav.com/uploads/1/3/2/7/132710797/wikik.pdf
    • http://files.chrissychristian.com/uploads/1/3/0/7/130775784/73f27.pdf
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/burbank_unified_school_district_jobs.pdf
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/fmcsa_medical_examiner_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6179/files/insert_documents_into_word.pdf
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/survival_of_the_sickest_summary.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/mufoxuzafez.pdf
    • https://cdn.shopify.com/s/files/1/0440/0598/2366/files/bugupeveva.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/40509056247.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1487/files/newalopen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13170590630.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7287/files/como_abrir_los_chakras_del_cuerpo_humano.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/91223311795.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/gematunef.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0841/files/12439599080.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/fojutebarexitogo.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_off00005330.bin
e4c14b0510c358a3b4094bf0a3440e6324672f682e7cba5366ae51c3bae596cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x5330 5356 bytes
font_01_sfnt_off0000657f.bin
50f35fb50e92551c3ca68aba0a6c0778e4a9f0c7f6b1facb0de2c777dcb35e92
pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 10092 bytes