Malicious PDF — malware analysis report

Static analysis result for SHA-256 16efd6ee97735d75…

MALICIOUS

PDF

54.3 KB Created: 2020-08-19 09:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 974de055a709d9e2181e078bf7001d78 SHA-1: 0f12b93f2207ffffeb4ca6eadbc2fc1e653b9737 SHA-256: 16efd6ee97735d752a3187593b813eb684d60b906b58ab55defecc257bfded0a
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=chord+2qute+dac+manual'. The document body, though heavily obfuscated, appears to be a lure related to a 'Chord 2qute dac manual'. The presence of many external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.ru/pify?keyword=chord+2qute+dac+manual
    • http://files.therockwm.com/uploads/1/3/0/7/130738949/7427997.pdf
    • http://files.richmondcountylittleleague.com/uploads/1/3/0/8/130874030/pemaleperarifime.pdf
    • http://files.natashadavid.com/uploads/1/3/1/3/131398308/patati-wiselipuxi-bukajujuduv.pdf
    • http://files.wun-mma.org/uploads/1/3/0/7/130776257/vabod.pdf
    • http://nabipi.bodyessencellc.com/uploads/1/3/0/9/130969465/6d9c50083e66.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/1644/3288/files/43108455706.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/foxigiliwogusa.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/54457834293.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/fupazugopagozusiroxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/35039721619.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/workbook_vs_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8763/files/14465437060.pdf
    • https://cdn.shopify.com/s/files/1/0441/1362/5240/files/84759093871.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7933/files/lujilozomovemawumu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1475/files/github_as_maven_repository.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/62314888774.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/90581516834.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/mokugagoliboxemizep.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000974d.bin
e5cf0d34019b9abe30824c7f9ecc59af1282a881aa3e83e243aeab3c56d75971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x974D 5164 bytes
font_01_sfnt_off0000a8ae.bin
51ea8c7462350af12c838b42720174c4fb94e31742c3cc8f8929aae2f980a6e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8AE 10420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.