Malicious PDF — malware analysis report

Static analysis result for SHA-256 386fd3e481b22184…

MALICIOUS

PDF

44.4 KB Created: 2020-10-03 03:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86a723a39a8c5706aac2186b60d09115 SHA-1: 1dd99b8de84ec088b0ac85285d0d64adc7ab8474 SHA-256: 386fd3e481b221841ee0f74723382ad6cbb7c1ca5544c3d67c9a148589c383a0
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link redirects to 'https://gettraff.ru/strik?keyword=air+conditioning+the+earth+ielts+reading+answers', indicating a potential SEO poisoning or traffic redirection scheme. The presence of numerous PDF links suggests an attempt to distribute malicious content or drive traffic to potentially harmful sites.

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=air+conditioning+the+earth+ielts+reading+answers In PDF document text
    • http://files.retrodollseurope.com/uploads/1/3/1/3/131382092/temiza_jeveja_gekujugilowesow_rivilimupajimev.pdfIn PDF document text
    • http://files.harborimpactministries.com/uploads/1/3/1/8/131856851/3616556.pdfIn PDF document text
    • http://files.becomingjewish.net/uploads/1/3/1/3/131398097/3997654.pdfIn PDF document text
    • http://files.julianoshea.com/uploads/1/3/1/4/131453807/jibumojexoje.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/dimojejokanelofijovemi.pdfIn PDF document text
    • https://site-1040250.mozfiles.com/files/1040250/diwapexogagesam.pdfIn PDF document text
    • https://site-1038493.mozfiles.com/files/1038493/jawum.pdfIn PDF document text
    • https://site-1039261.mozfiles.com/files/1039261/rewuxeb.pdfIn PDF document text
    • https://site-1043032.mozfiles.com/files/1043032/pudusitivojodepowatowek.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/23575533210.pdfIn PDF document text
    • http://gusupo.thedanceacademymi.com/uploads/1/3/2/6/132680949/2326038.pdfIn PDF document text
    • http://files.ronnater.com/uploads/1/3/1/4/131438296/d6f94b9823443ae.pdfIn PDF document text
    • http://kamojiwow.root5farm.com/uploads/1/3/1/4/131406289/namobirevexojeje.pdfIn PDF document text
    • http://files.deerhazel.com/uploads/1/3/1/6/131637190/3960311.pdfIn PDF document text
    • http://likezipim.summitbirthutah.com/uploads/1/3/1/6/131607208/laxowibizatoju_befujat_bafedakese.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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_off0000612b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 5068 bytes
SHA-256: af0ef2da6a992496f1ddfa2f0a269a06890837d1204d340cff1d59913ea11b0f
font_01_sfnt_off0000725d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 10536 bytes
SHA-256: 3dbab1c43b2c57ab25b96260678c57e376ffa114d677dfb1ccf67fe464ee865e
font_02_sfnt_off0000965d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x965D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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