Malicious PDF — malware analysis report

Static analysis result for SHA-256 597f70ee3705c79b…

MALICIOUS

PDF

53.9 KB Created: 2020-08-05 17:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c293a7018c621f7d04527002b988e5a SHA-1: bf5e47664ed800c7b1744dc8e26bc5f93abaa2e0 SHA-256: 597f70ee3705c79bfd3e71114dc1ae53b59c5f3126550a99b0e49128d41ddab0
120 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, specifically pointing to 'https://ttraff.cc/pify?keyword=vitamin+b6+deficiency+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO poisoning campaign. The document body, though heavily obfuscated, contains the redirector URL, reinforcing the malicious intent.

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=vitamin+b6+deficiency+pdf
    • http://files.ocaladecartists.com/uploads/1/3/2/6/132680852/lojudigoxe.pdf
    • http://files.clubsandcommunity.com/uploads/1/3/1/4/131453031/6ec97c.pdf
    • http://files.mayarboretumsociety.org/uploads/1/3/2/7/132740905/d49c6f.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/archinteriors_vol_47.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/10815573629.pdf
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/tozutixojurogutekasubix.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/3964521903.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1741436775.pdf
    • https://cdn.shopify.com/s/files/1/0432/6473/7448/files/popewoviropekenet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/56795668995.pdf
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/bomur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/vekaposekidaxisagosomor.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/zuwakevimusu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/36544810082.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/giwenusixapasavejipu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/23144331531.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/64703104011.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_off000091b0.bin
3178853b73675cad86ed8424e45c01244ce01bc80dc83c9cb90bc8b8a88d4f14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91B0 5356 bytes
font_01_sfnt_off0000a3ea.bin
839172a11b02bc6045d98d3538ca2c81cd9e75571dc074e9c6402c62038c5af9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EA 12080 bytes

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