Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23956e6b08b0e6c…

MALICIOUS

PDF

42.1 KB Created: 2020-10-02 16:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fe3baeed74cc93bd88eea66439abb0ce SHA-1: 62c89dca603bbc6bed8d61f1494c3908bf91eab5 SHA-256: e23956e6b08b0e6c61857ddd16b5a4741743079743ec4055e59df1ce4447ac56
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://gettraff.ru/strik?keyword=descargar+los+libros+apocrifos+pdf In PDF document text
    • http://files.artbyamandahorn.com/uploads/1/3/1/0/131070539/rifipena-dirukizi-bajubabitadoj.pdfIn PDF document text
    • http://xovaw.lavishcoatings.com/uploads/1/3/1/0/131069766/xofudamizu_boxejosuros.pdfIn PDF document text
    • https://site-1040256.mozfiles.com/files/1040256/54102484147.pdfIn PDF document text
    • https://site-1037135.mozfiles.com/files/1037135/55171407990.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/vizalokaxuw.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/bb04f139-1b37-4208-a0c7-03580f623e08/sizirasigejavipibinefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035733bc-f07b-413f-a414-32648a201efe/gusufuwirasapunusatelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d211d7bc-b10e-4043-b0f6-614669061223/rurup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6252a8e9-22ec-46ce-9134-03e7fce2dc7d/kazok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c06163-771c-46bd-930c-76816c4d146e/90261412451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac99210-2adc-42f1-bdb2-5580f059aed9/marajudaxadepev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/416afcda-48bd-42f0-b667-5dfd43ff2233/vorubujetudireg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8392713f-247b-4b16-8af5-1828fcc0a864/tigavinu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C4 5464 bytes
SHA-256: 5813bac641b7825fcc45b1f7031ec2111f43d40cafd63e9dcb848f966e68f6d0
font_01_sfnt_off00006c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5A 2116 bytes
SHA-256: 8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
font_02_sfnt_off00007602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 10836 bytes
SHA-256: fc72e9f1aaa5674db99bffe399e44cd303c526f8613a3e5616867514e3b73815

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