Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6010c50b581f93…

MALICIOUS

PDF

71.6 KB Created: 2020-08-03 11:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8376307afa74831ecba2be3e355d59d SHA-1: 813244fb0ea548a2be633941b959dcd30fb797f6 SHA-256: 1d6010c50b581f93fd9e36fcb35b13f1d46770cbb844d512319bee48b51e0ed0
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files, characteristic of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=honed+metal+skyrim', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious content through a chain of links. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/pify?keyword=honed+metal+skyrim
    • http://files.vedacollective.com/uploads/1/3/1/6/131637919/2088152.pdf
    • http://files.reroutedmusic.com/uploads/1/3/0/7/130739715/tawekafonatekujibi.pdf
    • http://files.daughtersofmadreearth.com/uploads/1/3/0/9/130969837/jibixawuv_bonarubigujize_sunanomebemi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/93061329652.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/91344286128.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/wuleraladu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/55343418319.pdf
    • https://cdn.shopify.com/s/files/1/0441/3957/7496/files/bijapumupubuwabowe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5927/2090/files/cul_de_sac_smash.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/widarak.pdf
    • https://cdn.shopify.com/s/files/1/0428/6201/8716/files/40741657323.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/dnd5e_dungeon_master_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8450/files/girojilovuwore.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/72169683988.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/piniramexejotabirute.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008dce.bin
1659a657ee3e7cc831c129341316182253eae7f32258c36bff2240178e20bf52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCE 18160 bytes
font_01_sfnt_off0000c7c5.bin
34ae6f3d24f64c06fa20c71b31a23e1877c468ce7a1f8c2a831ae7ca2ef80d9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C5 5100 bytes
font_02_sfnt_off0000d903.bin
c615e46d57fb05191b111fd7cf658d1d88781419040a8f2b0201b415bfd4ff03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD903 10176 bytes
font_03_sfnt_off0000fc02.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC02 16092 bytes

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