Malicious PDF — malware analysis report

Static analysis result for SHA-256 5688fdc9cf8d726e…

MALICIOUS

PDF

38.4 KB Created: 2020-08-22 05:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4442699be4e86d129b168f411699fb2 SHA-1: d1b1481b862e3d3f771825069a5bb9cea8d9e29a SHA-256: 5688fdc9cf8d726e3b4fd7fedd3a7ee629e9f86747e96ffa8e5f2842d5d60634
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=latest+ios+macbook+pro'. Additionally, it features a PDF link farm with numerous external links, many of which are hosted on Shopify but some point to unknown domains. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, reinforcing the phishing or scam attempt.

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.ru/pify?keyword=latest+ios+macbook+pro
    • http://kifeloxem.yoursleepguru.com/uploads/1/3/1/4/131409090/kuxuxogafozas.pdf
    • http://files.care.coach/uploads/1/3/0/9/130969300/5800149.pdf
    • http://wanimup.northsidepresby.org/uploads/1/3/0/7/130740051/nulitikanumave.pdf
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/crosman_760_pumpmaster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/javascript_linear_interpolation.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/adaptive_reuse_buildings.pdf
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/tabogowukaripozom.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/madurutujisegubizufugol.pdf
    • https://cdn.shopify.com/s/files/1/0434/6481/8838/files/beware_the_dog_roald_dahl.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/40632938268.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/bringing_out_the_best_in_others.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/antepartum_hemorrhage.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_off00005969.bin
9588bc2c2a700c3e69dd1b2649483ad452494009160d7708e0c152239cd73f9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5969 5192 bytes
font_01_sfnt_off00006aff.bin
c5a3f5b485dae5b9c04397f23b4e8d5f3b8c576213ccd8354106b215df4ef638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFF 9872 bytes

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