Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1c7996ed2f24d8…

MALICIOUS

PDF

56.0 KB Created: 2020-08-07 18:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 93b58d83a66ec8e4b8641bc99164b117 SHA-1: 7df34e0916e72a82e4020223d09d0752dffa12ac SHA-256: 9c1c7996ed2f24d86a098940add9e9d83e81448f87c8c7926aa7348cf8027740
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=bolted+joints+design+pdf In PDF document text
    • http://files.englishcentral.info/uploads/1/3/0/7/130775046/d46da2ef999.pdfIn PDF document text
    • http://files.jcampfit.com/uploads/1/3/1/0/131069832/8285630.pdfIn PDF document text
    • http://sexafezas.dmlaser.com/uploads/1/3/1/4/131407227/544ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/6546880558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/bidaramud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/48233139006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5657/0266/files/61500326318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/irs_pub_523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3490/0642/files/pukimizudatiwisazemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/34891252835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/nejezeseni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/bonefish_grill_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/dapejewebit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/78218733605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/6522657880.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8934 5028 bytes
SHA-256: 0331c1ee2fa9126d22596ac895add841bb51b168eed130bc552210faad4cfa0e
font_01_sfnt_off00009a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A79 10416 bytes
SHA-256: be7a5337a777360ef2f8c0a1c1b4872efa9c5038346533f1a4d9366b50179589
font_02_sfnt_off0000be4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE4A 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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