Malicious PDF — malware analysis report

Static analysis result for SHA-256 517fdb1237d2858d…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 14:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a222d4652493f1a6b2efb41fa5cc8fd SHA-1: bfb99a2a6c85ddb6600f04120bf747929b26ebdf SHA-256: 517fdb1237d2858d585067c557933ade8a78462967120c6f810e0525cbb5b348
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as a book, which is a common tactic for SEO link farms. One of these links, 'https://ttraff.cc/pify?keyword=burger%2527+s+medicinal+chemistry+book+pdf', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

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=burger%2527+s+medicinal+chemistry+book+pdf
    • http://files.cbcky.net/uploads/1/3/1/3/131383998/satudepiwupigogewe.pdf
    • http://files.martinbyhower.com/uploads/1/3/1/4/131438539/a84626a8411.pdf
    • http://jikes.baase.co.uk/uploads/1/3/1/0/131069934/6193602.pdf
    • https://cdn.shopify.com/s/files/1/0459/9532/7655/files/13105536358.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6721/files/dudivatagitukovojir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/calculator_for_win_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/27976960390.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/wavifasufonizijenelegofi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/2325101113.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9309/files/snakes_and_ladders_board_game_blank_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/9544/7970/files/vimipogedazakinovasoda.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/spatial_data_modelling_for_3d_gis.pdf
    • https://cdn.shopify.com/s/files/1/0438/9843/7784/files/gamixoxoti.pdf
    • https://cdn.shopify.com/s/files/1/0447/8110/9405/files/toefl_certificate_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/4805549945.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_off000068ee.bin
f692630c34b484370ff57733d0d8f85d731ef2d9fed0f268d1eeecb2e755a3c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EE 5956 bytes
font_01_sfnt_off00007d19.bin
725696c381c02a07be832714185b2b6e11d20965b65d6ddb889f138c22290899		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 10596 bytes

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