Malicious PDF — malware analysis report

Static analysis result for SHA-256 10bb9a315d8e5221…

MALICIOUS

PDF

80.7 KB Created: 2021-03-04 09:53:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 471fb47028885a32698692299d58e03a SHA-1: 4ab70298bff85a19d47f3ce208fce55b16afd317 SHA-256: 10bb9a315d8e5221904f837ff1b702959b383ce4045ac8864d6dadd18bc54b4f
252 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a significant number of embedded links, many of which point to known malicious redirector infrastructure or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a 'download button' lure further supports a phishing or malware distribution scenario.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yafferge.ru/wix?keyword=dragon+mania+hack+apk+offline In PDF document text
    • https://nadagedo.weebly.com/uploads/1/3/1/8/131858166/b2b13a72799.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/vakajusamerisovowuw.pdfIn PDF document text
    • http://dosubodanes.mypressonline.com/mofomusavokawuwazeti.pdfIn PDF document text
    • https://gumewutudeg.weebly.com/uploads/1/3/0/8/130813982/bokosamuligoniv.pdfIn PDF document text
    • https://boseveju.weebly.com/uploads/1/3/4/5/134595203/de9b05250e0fd.pdfIn PDF document text
    • https://nenubijul.weebly.com/uploads/1/3/5/3/135393623/401f2f7fa20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447434/normal_60163a522eb35.pdfIn PDF document text
    • http://dizititakozazi.mywebcommunity.org/fabosedonujenowu.pdfIn PDF document text
    • https://waxevinibiwe.weebly.com/uploads/1/3/0/9/130969944/kavopezalas.pdfIn PDF document text
    • https://xubajibagi.weebly.com/uploads/1/3/1/3/131378916/torawipirosebule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_601cf23b7ca13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412573/normal_60316e3948edc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/troy_bilt_walk_behind_string_trimmer_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/christmas_music_songbook.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/61087768839.pdfIn PDF document text
    • http://zamituzok.rf.gd/whatsapp_video_2019_song.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/sozufuruzuwedanure.pdfIn PDF document text
    • http://kesekerezox.epizy.com/android_tv_apps_xda.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF869 5316 bytes
SHA-256: f788423571df14eb9867e84fcd2d6daec2032abb97e80076290f7e6a91609dc1
font_01_sfnt_off00010a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A60 16540 bytes
SHA-256: 524475771d103bd5a77cc95a74e2b74d74c777cd4c81884895acf6483853d679