Malicious PDF — malware analysis report

Static analysis result for SHA-256 44128807d74aebde…

MALICIOUS

PDF

44.3 KB Created: 2020-10-10 18:07:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-05
MD5: ea09fb0147e8352eabfeedab252cc181 SHA-1: 8c73c507c3339fc06454240f43b3b6fe58927c26 SHA-256: 44128807d74aebde6bf74859a1165427b09d5326e4df33980c727c857387dbb7
264 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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=the+notebook+novel+pdf In PDF document text
    • http://files.tiffanybryson.com/uploads/1/3/1/6/131606133/aa8a67c.pdfIn PDF document text
    • http://files.houseofkshop.com/uploads/1/3/1/4/131437987/pavumusupatowil-notabez.pdfIn PDF document text
    • http://files.cre8mag.com/uploads/1/3/1/8/131856380/garetoxixixozut.pdfIn PDF document text
    • http://sideja.judyireneharney.com/uploads/1/3/1/4/131453540/5bf93c403a77f.pdfIn PDF document text
    • http://pafubesel.alexandrahaleyart.com/uploads/1/3/0/8/130874679/2381894.pdfIn PDF document text
    • http://riziga.lovelocalnashville.com/uploads/1/3/0/9/130969018/3365685.pdfIn PDF document text
    • http://files.elitesalonspaelma.com/uploads/1/3/2/6/132682039/4971910.pdfIn PDF document text
    • http://files.stoddardumc.com/uploads/1/3/1/3/131380870/vizufunivusesug.pdfIn PDF document text
    • http://daxox.royalnavycemeteryantiguaproject.com/uploads/1/3/0/7/130775491/gewefafevuji_dobokibal_kivixuzevononux_wisebad.pdfIn PDF document text
    • http://files.readmyoriginalstories.com/uploads/1/3/0/8/130813582/lubofe_nafime_juvifavotilan_bipizo.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007143.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007143.bin)
    • https://uploads.strikinglycdn.com/files/125b9b3b-f119-4aad-9bd4-daf6577b8a6a/bitusigixolunabovovejide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c277697f-da92-4e9e-b7ff-dbaff0ca0f8c/zaluxorogixifetivopogas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b9c6a12-ea6f-454c-85dd-700fcb995fa2/kubesiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06ff93fa-383e-4ef4-8b62-3cef2d4292c2/4911461437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1afe9d5-2d25-43f4-b17c-4c3ea4d4e541/xolojofonunegesukeku.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_off00007143.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7143 4860 bytes
SHA-256: 0ebb74d26a9878790ecebb0ab301b4438cc7a7d613a64736bb50c1086eb35a7c
font_01_sfnt_off000081cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CD 10164 bytes
SHA-256: 46085a23209a11c12dd657ce9750b602afe3813f970be49a8304ec2ea4646287