Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1403201334c913…

MALICIOUS

PDF

50.8 KB Created: 2020-10-04 06:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 210309ab8c639059eea3ec53477bc0df SHA-1: 3a1ab366fd01a606b9bbd80f80a7ac9282f7e04e SHA-256: 2b1403201334c91391cdce15ddccbb53328566998c2bb3050be027944d6d1873
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links to external resources, with one specifically identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect users to malicious content. No scripts were extracted, limiting the analysis of further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://cctraff.ru/pify?keyword=glencoe+health+2007+pdf In PDF document text
    • http://files.shademotorkits.com/uploads/1/3/1/4/131437680/9838626.pdfIn PDF document text
    • http://tumebuba.nhsofdav.com/uploads/1/3/1/4/131406841/7530e7be82fe8b.pdfIn PDF document text
    • http://files.stoneranchpta.org/uploads/1/3/1/8/131856574/5962515.pdfIn PDF document text
    • http://sokax.exploretheworldtours.com/uploads/1/3/2/6/132696558/vabironigisumaxufiz.pdfIn PDF document text
    • http://files.paintingsbyhelen.com/uploads/1/3/0/7/130776639/8023296.pdfIn PDF document text
    • http://votuwubi.pbjfewspotacrepoas.com/uploads/1/3/1/3/131381761/mepodu.pdfIn PDF document text
    • http://files.psnwrug.com/uploads/1/3/1/4/131438843/lozuvimonaduma.pdfIn PDF document text
    • http://koreva.wisefooltheater.com/uploads/1/3/1/4/131410090/582246.pdfIn PDF document text
    • http://files.compassionate-language.com/uploads/1/3/1/6/131637140/6735032.pdfIn PDF document text
    • http://files.stpetersarkley.com/uploads/1/3/0/7/130776142/mubalun.pdfIn PDF document text
    • http://taxes.n3vem.com/uploads/1/3/0/8/130813059/tovezolegi.pdfIn PDF document text
    • http://tixis.khloekares.com/uploads/1/3/1/6/131637409/4253464.pdfIn PDF document text
    • http://files.columbuscountyfarmersmarket.com/uploads/1/3/0/7/130739895/2125370.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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
    • https://uploads.strikinglycdn.com/files/7920da43-8dc0-4135-8a61-cfaea102f704/naziwobagobavujuzin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d94a109-ff10-4969-ae65-99da8484df72/54020204925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce82d52-4ada-4113-b562-073993b215b1/30283448621.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DE 1708 bytes
SHA-256: c01ce4be444dd7660c95ebbf8323f713dc86dd38544e1d8408deb719d7564ade
font_01_sfnt_off0000724e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 5092 bytes
SHA-256: 2c80389712b4b7f83c4c757d7434bf361dd11a19218897f58fb1c44ab3a461b2
font_02_sfnt_off0000839b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x839B 2048 bytes
SHA-256: d786b8d4005b3adb5f91a4f7ee5e436ed4806a9036719a481fe9d42720934c93
font_03_sfnt_off00008c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C81 10260 bytes
SHA-256: 6550c5865daefe00fc43c3bbceceba1ca92d09e4b639abb09708720efcab7f0e
font_04_sfnt_off0000af83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF83 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3