Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e6f879294a31c9…

MALICIOUS

PDF

37.2 KB Created: 2020-10-04 06:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c85af4f3c79b929e75fd6d641e390c06 SHA-1: 5e439f530fccc082e3be9fbb0f09387972fc90e9 SHA-256: 05e6f879294a31c9a73338dc6860e3b3e7db931a9f07f343de9354b1ad940678
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://ggtraff.ru/strik?keyword=manuel+sage+100+comptabilit%25C3%25A9+i7 In PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/97108176865.pdfIn PDF document text
    • https://site-1037858.mozfiles.com/files/1037858/gaduligikomobifagu.pdfIn PDF document text
    • https://site-1040869.mozfiles.com/files/1040869/kodixogajarapojabomoxog.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/lozumepofetapanizazejo.pdfIn PDF document text
    • http://files.jadereiseandtours.com/uploads/1/3/1/4/131414743/vabuzer-kunizudi.pdfIn PDF document text
    • http://wuburi.svea1988.com/uploads/1/3/0/7/130775172/4198896.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/c92a8261-18e2-47e8-b774-0e03baeb1521/suxazoburexol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/342fa324-8cac-46f3-a648-734dcbb12e4f/duvujazaduzavamaduliwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9daea1-8835-4ce6-9a83-c924953be40f/ladubolotozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45c793e6-21e9-4a20-912b-0541d88e286e/vapomifemupolagegumeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/413b7e12-5c67-4c2c-87c8-fdd067c607cf/nonotewi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412d0524-7661-45d0-a139-0847e7a0d001/74802149748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c879942-a11a-4cf0-bb5b-56c5bbefcc9d/jiwovixateja.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED5 5720 bytes
SHA-256: 8b261a8d09f382154d6308a6ac391436446b0671a5ea4c4befde38ed33283d13
font_01_sfnt_off0000620c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620C 11116 bytes
SHA-256: 652e76ac55d1f49241fd2727b5d8db8d1cd43130c4d23cf8e01b04657060917a

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