Malicious PDF — malware analysis report

Static analysis result for SHA-256 59cc05c22dd189fc…

MALICIOUS

PDF

49.1 KB Created: 2020-08-06 10:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dc1fb389c1d6968b872533e95b9ef0a SHA-1: 2205787c5ef855a8daad8e760dda878201fd43d8 SHA-256: 59cc05c22dd189fc09c8ff0aa3675b997c9a8eefbd16084ecee67b0b246bce84
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=vocabulary+list+dan+artinya+pdf'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a benign Shopify URL, suggesting a lure to a malicious site disguised as a vocabulary list. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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=vocabulary+list+dan+artinya+pdf
    • http://files.hollycho.com/uploads/1/3/1/4/131482976/gorotavisu.pdf
    • http://files.janbromleybeauty.com/uploads/1/3/1/4/131453062/getusigi_nidemifod.pdf
    • http://files.greatscottfarm.com/uploads/1/3/1/4/131406506/basizup.pdf
    • http://files.musica-mitchell.com/uploads/1/3/0/8/130874060/nubinarawukokir_zefemifu_piwivewurabejez.pdf
    • https://cdn.shopify.com/s/files/1/0434/7743/4525/files/42952676578.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9448/files/43607585751.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/dabix.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/beramimu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/34199706405.pdf
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/wejosemu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/humphreys_introduction_to_lie_algebras_and_representation_theory.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/13037583788.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/46206972336.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/xekun.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/xinexawisepiteloxegukaza.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/gubodof.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_off00007799.bin
e90b6475c558cca616ee211435822f78b55e1d3153c5ff92873e6e181e287f54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7799 5356 bytes
font_01_sfnt_off000089e1.bin
dc3d24b85711806fbaf04223d33db8f143bca3eb28f26653b0084243815e5f94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E1 14860 bytes

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