Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba7577b334b77ad…

MALICIOUS

PDF

61.7 KB Created: 2020-08-21 16:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f04b06b42fd485d0ba87ff17ed214bb SHA-1: 50bb36d71601da2458c2cbe3d3b6466df05c7d93 SHA-256: 6ba7577b334b77ade1b446216fbc30e352e294a7a73240e2c4e34ee164bf7321
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious site or download. The document body, though partially corrupted, contains text related to the KJV dramatized audio bible and references to the tool used to generate the PDF, suggesting a lure. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=kjv+dramatized+audio+bible
    • http://files.bentonwcedc.com/uploads/1/3/2/6/132681409/rozudot-bogusajogar.pdf
    • http://debudazi.claritydoorsandwindows.co.uk/uploads/1/3/0/8/130813528/db304e61daaa5e.pdf
    • http://files.colonialbakerynj.com/uploads/1/3/1/4/131484133/ponosesategi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8049/9879/files/20090836017.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/58820482520.pdf
    • https://cdn.shopify.com/s/files/1/0460/0214/3391/files/20747431889.pdf
    • https://cdn.shopify.com/s/files/1/0448/3697/8850/files/80403844896.pdf
    • https://cdn.shopify.com/s/files/1/0431/0423/9783/files/yugioh_gx_episode_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6102/files/bewidamibutalexejinerigo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/shigley_mechanical_engineering_design.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/mafebuzawivifo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/check_all_subreddits.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/66456759334.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/soxusafe.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087e3.bin
4ffbcce2ff996728d92dbdd733216702f87cbb07ef04260e29d0ff45949b49fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E3 5088 bytes
font_01_sfnt_off00009927.bin
c99d7a4a1f6f400965b15ee75101435c18fb01661d8c31d1ec5a24c866a60e1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9927 7512 bytes
font_02_sfnt_off0000aea6.bin
da28e60ebc964ea57647d60dc3455e5d36d2f68945a7f7940bd9a4b3a02816a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA6 10588 bytes
font_03_sfnt_off0000d2cb.bin
f68e4b4d42456b360743c7acf69c82a49aa063f25f521dd5c66d8c69e3fa217a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CB 16436 bytes

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