Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8bbb6081384ba93…

MALICIOUS

PDF

43.1 KB Created: 2020-10-24 10:30:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 9003b53bb46dbc05de8c490eed5a21d8 SHA-1: 4533e3274482b32ae97520dbf16fa7d1bbe550cc SHA-256: a8bbb6081384ba935ed1ebf40e93264f5b7dd1ae2cde4bdd0e87a5f39d59aa7d
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://ggtraff.ru/wb?keyword=tecnicas%20em%20necropsia%20pdf In PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/koxaviwuw_vowepotoba_petegerepoxos.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/sakibugimakizej.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/35d1cd.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/nusisun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f9089ae634b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5f8d1fc50f0cf.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/azatioprina_50_mg.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/83091055738.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/20088099752.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/89065849181.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/44328354497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_5f8ddd8a48329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5f8f07d7b7a6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_5f931988553f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387242/normal_5f91839c68b28.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/5292014.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006b1c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006b1c.bin)
    • https://uploads.strikinglycdn.com/files/db3dc833-e115-4279-8782-259fac481b1e/xujufapuliv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca701e4f-2eee-45cf-9a88-4457066d5de6/tididonizepalafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faff606c-aeff-4ffe-b8b5-772b10a4e8d9/tuvatitotidix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb0535b-0379-4e2c-b5f5-5a38e685b526/tuneup_2015_key_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a39c0f73-65e9-425b-bb3b-ae0887d0c369/wotojalisukixikokifomomim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf9b0484-854b-4db2-a9bb-9aa162d60d4e/38934248098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ca907b-d9cf-481b-8e44-51d610f54e09/torililexofaxiri.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_off00006b1c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 5220 bytes
SHA-256: 4e629df605b2b243b1b3859ffb1edf978f123617c915ddcb3ad343f5851889ae
font_01_sfnt_off00007cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC4 10452 bytes
SHA-256: edfe4ddd8879fe25f5164b54ea1bec1e2004a875d36fd0ec1790166a65e93b9c