Malicious PDF — malware analysis report

Static analysis result for SHA-256 0833a35e03536bb0…

MALICIOUS

PDF

56.2 KB Created: 2020-08-09 08:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a71f29bf3c32e32ad7d5e7431db7bdb SHA-1: 607df965e8b5d691c85063ef94be5658d4f876e5 SHA-256: 0833a35e03536bb0f20c357b77178b0fe7db93e2023cbd210c71e40255889272
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags the URL 'https://ttraff.com/pify?keyword=star+wars+ffg+collapse+of+the+republic+pdf' as malicious. The 'PDF_SEO_LINK_FARM' heuristic indicates the document is designed to host numerous external links, likely for SEO manipulation or to distribute malware. No scripts were extracted, and the document body is largely unreadable binary data, but the presence of malicious links is sufficient evidence.

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.com/pify?keyword=star+wars+ffg+collapse+of+the+republic+pdf
    • http://files.jemmakehoenutrition.com/uploads/1/3/1/3/131379510/b165449d.pdf
    • http://files.breastroanoke.org/uploads/1/3/0/7/130739779/1f57c073a.pdf
    • http://files.matthew-radford-davies.com/uploads/1/3/1/4/131411596/0e80f30.pdf
    • http://files.mobile-mower-fix.co.uk/uploads/1/3/2/6/132682627/95e5e2e9eaa.pdf
    • http://fewutuv.karmakeys123.com/uploads/1/3/1/4/131482975/ba91c37127.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/50733257727.pdf
    • https://cdn.shopify.com/s/files/1/0443/0407/2860/files/convert_powerpoint_to_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/78183839191.pdf
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/5941235649.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1600/files/19439795277.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9434/files/84040127179.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8829/files/ncert_chemistry_notes_class_11_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/73561440112.pdf
    • https://cdn.shopify.com/s/files/1/0428/9377/0919/files/recording_discord_audio.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/11342608614.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/ashrae_handbook_hvac_applications_2020.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_off00009d33.bin
a13749c42f5fd93ae126d49d0d209b36f35d1c213e62605e4fe68a44c2b4e409		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 5752 bytes
font_01_sfnt_off0000b0cd.bin
a7c45f8d8e58b0fdb46fa2777471d3e2c510a250902236d4e7f33e4f9bee4ae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CD 10196 bytes

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