Malicious PDF — malware analysis report

Static analysis result for SHA-256 2834387ee522b289…

MALICIOUS

PDF

42.3 KB Created: 2020-08-08 12:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cb08cf1c024e9cbfd4118865fb6de5a SHA-1: a7e51161f2c18d0d4df51c8787f6e475b7424c07 SHA-256: 2834387ee522b289d384b19b2c1afe6bf8af121126b67239126c33854ef0b2de
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, pointing to 'https://ttraff.ru/pify?keyword=general+ledger+accounting+process+pdf'. This URL is likely used to redirect users to a malicious site. The document also contains a PDF link farm heuristic, indicating an attempt to generate traffic or distribute content through numerous links. The embedded URLs and the document body suggest a lure related to accounting processes.

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=general+ledger+accounting+process+pdf
    • http://files.anotherveganpodcast.org/uploads/1/3/0/9/130969176/a94eff7d9e.pdf
    • http://files.littlebearknives.com/uploads/1/3/2/6/132681164/ab64d.pdf
    • http://files.ph-reviewers.com/uploads/1/3/0/8/130874063/beba43fe8.pdf
    • http://files.americastrumpet.com/uploads/1/3/0/9/130969446/puvederin.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/52409669039.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4344/files/pezobowurijigejegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/majadudex.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/22091323894.pdf
    • https://cdn.shopify.com/s/files/1/0432/2433/4498/files/51254951315.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/88049995777.pdf
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/fafobatadagoxabefetez.pdf
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/direito_penal_bitencourt_parte_geral.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/55900320642.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/83556221808.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/dappu_srinu_ayyappa_songs_lyrics_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/80983094676.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/fuxutevuxoduvodef.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_off00006729.bin
87f058532618bb956737d147d8d30e666c54b7cc1e64d69e83bbb36fbcdff9b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 5352 bytes
font_01_sfnt_off00007970.bin
ee01093f4489d162fcdccaa2ec9271f8405965b2d4c01395302c04670db11f19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7970 10052 bytes

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