Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7959a9bdd79900…

MALICIOUS

PDF

37.4 KB Created: 2020-10-28 05:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 215bf805da7e5d038949bf897d78308a SHA-1: 4567c84f5141f22a92371993f37179fc86dac34e SHA-256: 1e7959a9bdd799009725f74e380fadffc55576857f8f865973791f54710997dc
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://cctraff.ru/strik?keyword=final+countdown+drums+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f9099a324dd1.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/5310202.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/9187472.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/tiginun.pdfIn PDF document text
    • https://nowusunomotir.weebly.com/uploads/1/3/4/3/134314498/matigefa-saremedepakaxu-sarejujirijevin-wogogel.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/5789347.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/namajureponese.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/bisitikeliw.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000052db.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000052db.bin)
    • https://cdn.shopify.com/s/files/1/0496/1389/7879/files/jurassic_survival_island_dinosaur_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8361/9232/files/kamurapaterilesavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/0116/4965/files/77556357941.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43044393-72e7-43a1-963f-b69a0158600a/57098626709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9efac973-28aa-4744-9800-dbce9a85d95c/kabejitutoniku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6555/9190/files/25240810828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/laptop_table_for_couch_walmart.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 extracted file (font_00_sfnt_off000052db.bin)

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_off000052db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DB 5348 bytes
SHA-256: c26309de21232cb3c807e4cb7b3775577c548bc586e644d9795441f95351ce2b
font_01_sfnt_off00006504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 10528 bytes
SHA-256: 9a0d41b47fb759a03b14e956be26ec81fc675a4a1d070edad6a8aea078729451

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