Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c29cabe93857b9…

MALICIOUS

PDF

41.6 KB Created: 2020-10-31 12:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c2fc8fc4e6405ddb70eceea968f18bd8 SHA-1: 199c960ca8ba2c798d6053d535737cb9db0cf182 SHA-256: c6c29cabe93857b91052d5303a64522641c6d3a4ee0e8885b9e0c8b07edff4ab
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.me/123?keyword=the+lady+or+the+tiger+analysis In PDF document text
    • https://nefenupenarus.weebly.com/uploads/1/3/4/4/134476068/3482371.pdfIn PDF document text
    • https://silemixijotin.weebly.com/uploads/1/3/4/4/134463531/pekusejiga-kozudase.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/7841829e-674c-4d23-8291-f8f39d61adb0/13193169246.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/widexisitumozijusi.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/voltaire_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b7edd63-5cbe-427e-a891-92a3be6861af/jawolimesa.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/cessna_172s_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/13898537806.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/72191344398.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/koxozaparinexoxoxibarile.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/28553177803.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/61547744640.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_off0000639a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 5140 bytes
SHA-256: dfa81b3338334a32da86bf059a2a09244fc8a92f87934adec3751a3db924d5cd
font_01_sfnt_off00007513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7513 11144 bytes
SHA-256: 03b3e4a0b3e2ef8bc11b9e9c596ddb82991016794ad474e00df54411c0cd50d6