Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c1b94c5b11389…

MALICIOUS

PDF

99.6 KB Created: 2020-10-03 02:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: fc9eddc5d07b82faf1aaf28e3d7ff885 SHA-1: 6f309c787727f248dcf2ccf338e629c06a8ae69e SHA-256: 4e3c1b94c5b113898f5f0c4aab0f2fce9531799da4c3eab867fcb9fb8a12e658
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=kanji+radicals+dictionary In PDF document text
    • http://files.rr-cc.org/uploads/1/3/1/3/131384559/jalovofe-wunov-nejaz-zigum.pdfIn PDF document text
    • http://files.ledgercoffee.com/uploads/1/3/2/7/132710683/vefewozadajed.pdfIn PDF document text
    • http://files.revrobinbartlett.com/uploads/1/3/0/7/130740292/zumadi.pdfIn PDF document text
    • http://files.glacialpark.org/uploads/1/3/0/7/130776511/3755455.pdfIn PDF document text
    • http://files.aubsblog.com/uploads/1/3/1/4/131437308/595811.pdfIn PDF document text
    • http://jevod.eratoalakiozidou.com/uploads/1/3/0/7/130739723/8188700.pdfIn PDF document text
    • http://files.trimbleassociates.net/uploads/1/3/1/3/131379540/muludifakemeveri.pdfIn PDF document text
    • https://site-1038451.mozfiles.com/files/1038451/86122824180.pdfIn PDF document text
    • https://site-1038961.mozfiles.com/files/1038961/lotuwomoramelel.pdfIn PDF document text
    • https://site-1037228.mozfiles.com/files/1037228/mamewametuvizetiko.pdfIn PDF document text
    • https://site-1042776.mozfiles.com/files/1042776/sikipituroganamibifubever.pdfIn PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/dazemarolulefogi.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/23daa7cb-4c8e-4a80-9595-2edb9136e813/72199265412.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000aed7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAED7 44040 bytes
SHA-256: d5e47c4ef75cb47ef58122a5fc659527ab6d84dac33449fc1f376ff7b97955cf
font_01_sfnt_off00013480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13480 5080 bytes
SHA-256: b531693fd6d507d0a5b72be8033ceafa9276f3103dc6712ce9ac307ec3950017
font_02_sfnt_off000145eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145EB 11052 bytes
SHA-256: 8d387e72ee35f9ee45bfcbe369ed3f5e7248470e1a4b9a86505c2d86ba0ca1e6
font_03_sfnt_off00016b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B29 16272 bytes
SHA-256: 3b0ad27f105028368f655c84d930745d2549a2f48b139dfa0ea617102b60943d