Malicious PDF — malware analysis report

Static analysis result for SHA-256 e442b1624346ba93…

MALICIOUS

PDF

42.8 KB Created: 2020-09-30 19:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c822dd9eb5a26cce2942365d62da9cb8 SHA-1: 5d3ec7ec13697c297040ba404e1990768ad2c77b SHA-256: e442b1624346ba93397c07ce01982beff1aca89aef9ce57074b117ad38dd950f
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=weight+loss+workout+chart+pdf In PDF document text
    • http://files.christinecarr.com/uploads/1/3/1/4/131483153/414f958340.pdfIn PDF document text
    • http://zuted.bathurst75fc.com.au/uploads/1/3/1/6/131637830/gaminamabineguzi.pdfIn PDF document text
    • http://files.blissfulbeingsspa.ca/uploads/1/3/0/7/130739288/279754a.pdfIn PDF document text
    • http://files.peterpauljones.com/uploads/1/3/1/4/131438130/rewonidonofu.pdfIn PDF document text
    • http://files.yottaearthhome.com/uploads/1/3/1/4/131437276/nukekafudikuwute.pdfIn PDF document text
    • http://pepaz.baptistcenterchurch.org/uploads/1/3/0/7/130776225/sunuzuwemetosik.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/d97eba85-e7e9-4c84-8603-d9529db6d30f/70956853944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3252df75-2184-40e0-96e1-cd6d1aad34d4/78038153874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87a32866-1078-4c9f-82c6-f3b1013e4f24/govibarabevixakobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e877c0d-fea7-4194-a45b-9678f77fc667/pufaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b43f5145-8016-444c-9b33-291875ba364f/tofuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bcd63fa-7dae-4de9-ac69-ad4ff589f1cc/genuvuledo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f03d37e-cfc8-4912-bbe0-e30d499e0608/nabefirogosakanagevezus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98750dcd-ffe4-4f06-94dc-ea627a9429b1/7217026426.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_off0000695b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x695B 5588 bytes
SHA-256: f6a869a36ac831208104a990565d47a86943dd58e7871bb69e050476f604b9d6
font_01_sfnt_off00007c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 9952 bytes
SHA-256: b95beffd19a38f95ad253777c925ab38d44fe58153ca459c5512815c4022e86f

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