Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d80f140f9e6d0b…

MALICIOUS

PDF

43.4 KB Created: 2020-10-07 04:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 810ab2317330512d7b8279fe7d6a6684 SHA-1: 94c6efb67414709137c5ea42b184e382ffe057a2 SHA-256: e7d80f140f9e6d0b16a2a4d34d3daff9e4f0b102881c8c41f82d1cd7df5eb4eb
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=the+time+machine+book+pdf In PDF document text
    • http://files.listerpartyrental.com/uploads/1/3/1/1/131164460/803025.pdfIn PDF document text
    • http://savuraxov.tinalaufter.com/uploads/1/3/1/4/131483083/zezixeruvuxokom.pdfIn PDF document text
    • http://files.electaylin.com/uploads/1/3/2/7/132740320/8322645.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/b5b01a2b-105c-45ad-a47a-2ee0a64fdfed/bolaruvobizegowigezaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b550be65-fca5-467b-98f7-dfb086f2a3eb/53232063335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/564e0533-ef08-4064-9755-99a7fbf9824a/79887830140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81bca513-ca5d-47fb-acfc-4e5eb4fda9a5/69851227243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aa3ee0d-fff3-4402-a29e-72fb5873fb60/94730051963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50461e86-f1c8-44c4-8cd5-601927bce729/90216363638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cdcdfaf-7af0-4c0b-aff1-1383f7e5101e/75306714311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/478c95b2-1645-47cc-b3cc-8d4ade4858a2/46942021750.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe40d392-ebf7-4472-aac3-a16159d279df/nonapopapunizilade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5b9e0e1-2db1-4a76-9eda-f905e5d13c7a/tozotepadujenafutovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/311266b9-b33a-423c-aad0-dc94f43f1e46/fidepogipotaxexugaxepefor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/152a6632-7419-4a71-a1ee-b5c76311008e/gikofewubulesasemagokesu.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_off00006b92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B92 5240 bytes
SHA-256: 3f5ff38f8c5d2d8b3c761c63aca82d9a7ce1d4b06b8ddbec64d5a088a0856714
font_01_sfnt_off00007d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3B 10460 bytes
SHA-256: 4ed034ab5431a5e5e4152079250d58400b2d02adcdb61575ee48cba74341afcd

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