Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a7c719ae0c1470…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 12:13:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85092dd740eb185cda7bdac075c5410b SHA-1: 9d2485a06abba1d8bbd0e151e97fcc29815dbe54 SHA-256: 36a7c719ae0c14708e783158a2ebf5f43d03a2d8e4512c49cd433c2224fbe253
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'hotel manager cv template' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm, likely for SEO poisoning or to distribute malicious content. The primary attack vector appears to be social engineering through a deceptive link.

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=hotel+manager+cv+template
    • http://files.rayslicenseplates.com/uploads/1/3/1/6/131606393/ligujurakuxarorufi.pdf
    • http://files.jenniferrudyphotography.com/uploads/1/3/2/7/132710791/pokajadomu-digowara-besutojajivisi.pdf
    • http://nutib.friendsofmarplestation.co.uk/uploads/1/3/1/4/131406390/4674163.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6268/files/8582460808.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/malozirotezavafusug.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/myocardial_infarction_pathology.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/4999/files/borderline_kiilik_bozukluu.pdf
    • https://cdn.shopify.com/s/files/1/0441/0304/1176/files/makalah_alkalosis_metabolik.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8680/files/zigezowodijafadibufosugi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/70436388946.pdf
    • https://cdn.shopify.com/s/files/1/0435/4847/5541/files/67536352207.pdf
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/ruzunugoxaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/nalewexalumigazemevuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4124/files/central_air_conditioning_system_working.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/82683628029.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_off00006ccf.bin
b21d6834996f4ab3c533a64590765b1d32f7c849ab18d46a2ef1f5f93385ee05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 5096 bytes
font_01_sfnt_off00007e0f.bin
08414de55b07b263483735593eb789aad52f6412bb689d15d4d37c01f8c72da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0F 10220 bytes

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