Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6b8b2e8fede1da…

MALICIOUS

PDF

40.9 KB Created: 2020-10-07 11:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e26b4ff16720922d2b1d7db42f9d2de9 SHA-1: f3df480e9b2ef87ff66adcf678d47890d67cbcae SHA-256: 6e6b8b2e8fede1daf214d90cc051e10b7a9c554def853324c8cc69d85957e726
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.club/pify?keyword=.net+continuous+deployment+tools In PDF document text
    • http://files.atlanticcrossings.nl/uploads/1/3/1/4/131410872/titetasokex.pdfIn PDF document text
    • http://files.lksandassociates.com/uploads/1/3/1/4/131406077/9938346.pdfIn PDF document text
    • http://files.vanessche.com/uploads/1/3/1/4/131408397/9866128.pdfIn PDF document text
    • http://xekasekus.howspacecraftfly.com/uploads/1/3/0/8/130813577/b768ef5abc0bb.pdfIn PDF document text
    • http://nekixenov.mystictouchemporium.com/uploads/1/3/1/0/131070993/butikuvobo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c116d0c9-8e9d-46cf-b64e-6a6f15256465/58227331520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/524787da-674e-4a38-8045-1f5fbe6d4713/84030971189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ecdaada-6f6b-49a1-8761-e5f84eed90eb/62949977468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff697b8-382b-495c-a266-81f09879745d/21815521598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cad0e3c5-e189-4822-b726-c708a320054a/64686086325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a08dae09-63c4-4d45-8767-ae4a58018975/21097533835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98531c98-0280-4317-bc05-8b7d3cf08e46/demuremal.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 4952 bytes
SHA-256: b0d9da8d5c2c0494431feb72adaf50083e52b099ae144e0cfc69dfc7cc812f12
font_01_sfnt_off0000744a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 10080 bytes
SHA-256: 60a767e5406d815a119fa3ad473f48ce8fdba6bdfb03821bd3ce47aafb22e765