Malicious PDF — malware analysis report

Static analysis result for SHA-256 0547d27fc3100b45…

MALICIOUS

PDF

55.3 KB Created: 2020-08-13 12:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef190e4ed4e4d0fd1a709c80fa42554 SHA-1: 0ebc5a312caf489f6c5ed8edf899786bac7ade2c SHA-256: 0547d27fc3100b45a069020ecc867ef3820f735ffc8c99d5e420678d5f3d3f74
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs, particularly the one pointing to 'ttraff.cc', are highly suspicious and likely lead to malicious content or phishing pages. The document body itself is heavily obfuscated and contains a URL that appears to be part of the link farm.

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/wb?keyword=all%20out%20cricket%20magazine%20pdf
    • http://porika.ross-gash.com/uploads/1/3/1/3/131383548/janofinan.pdf
    • http://xasij.vertexflorida.com/uploads/1/3/2/7/132740900/ditomasesidej-dubofuvoki-musopovavobub-dekakomugepi.pdf
    • http://files.chandalinchamplin.net/uploads/1/3/0/8/130874416/1643125.pdf
    • http://files.wdfbusiness.com/uploads/1/3/2/6/132695302/wugame_xupujigaxupek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/sing_to_jehovah_songbook.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/air_cooler_working_principle.pdf
    • https://cdn.shopify.com/s/files/1/0447/6128/4757/files/2100035621.pdf
    • https://cdn.shopify.com/s/files/1/0449/3600/3752/files/1979_chevy_impala.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/75459266170.pdf
    • https://cdn.shopify.com/s/files/1/0432/1493/0084/files/hp_4650_driver.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/adam_smith_theory_of_economic_growth_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/23540526019.pdf
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/76557273246.pdf
    • https://cdn.shopify.com/s/files/1/0436/9468/6376/files/90182047945.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5830/files/65888462979.pdf
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/pifaludidobazidu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008c4d.bin
0f05df58cea571e06fb41a0d164be16293035224df0432e98591d4e7caf48ecf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4D 5284 bytes
font_01_sfnt_off00009e36.bin
f27a9819be63ee476e9233aadeafb7dd60b951e466b9390ee9cc62a0e9fa602d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E36 10352 bytes
font_02_sfnt_off0000c18b.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC18B 4324 bytes

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