Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d6b1c5d32d7c4f…

MALICIOUS

PDF

38.5 KB Created: 2020-11-05 18:13:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 4ea55fbfb1ad892a82ecf5a47fcc5064 SHA-1: 9a710ebb738d84d88c58b4af33eb30cc0bcfa590 SHA-256: a6d6b1c5d32d7c4ff31023ea6210a931216d9ab515650a70ad2e45addfd31b20
134 Risk Score

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.
  • 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://traffking.ru/123?keyword=fallout+4+best+mods+ps4 In PDF document text
    • https://xowilululevala.weebly.com/uploads/1/3/4/0/134017879/4034761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5f985307eb520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/memul/bovosatuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccfbdab8-6e6e-4f11-90ed-22484314f483/jadololosipigovuwujijosad.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/belojafojafipogad.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/gobebodamix.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/14358800932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0c6aaa1-c047-48c9-bd28-d2d7ba9faa0c/63050270184.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/game_modifier_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/79896718507.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c573b7-098e-4294-938e-ced602b5189e/96394833542.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ade58b9-4d74-4ab9-ab3e-80f2c795988d/15644725782.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_off000059c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C9 5192 bytes
SHA-256: c57a8b7b249cffede944e988649402433862225fdad1854549874e596f953808
font_01_sfnt_off00006b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B65 10104 bytes
SHA-256: 3d91f0d9cddc946d417c74ada5ff02d1743b2ec68d3a8097638b4190ace1868e