Malicious PDF — malware analysis report

Static analysis result for SHA-256 de5e06e991e6da6c…

MALICIOUS

PDF

70.8 KB Created: 2021-02-28 09:27:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 57873cdc2c3b75f7dd9c92cf4530685c SHA-1: bd8dec8c19b2edfa6eb0dc9dc42897f1ea09e25e SHA-256: de5e06e991e6da6c6a8449c2fcffb65ef19ad1ea775f935e99110c4f761ce6a4
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a PDF link farm and a critical ClamAV detection. The document contains numerous external links, many pointing to disposable domains, suggesting a link farm or SEO spam campaign. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of numerous external links and the overall detection profile suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/wix?keyword=sharp+cv-p10pc+10000+btu+portable+air+conditioner+ac PDF link annotation
    • http://zoo-taxi.site/android_16_speech_to_gohand2ifr.pdfIn PDF document text
    • https://piwutevuxave.weebly.com/uploads/1/3/4/8/134891910/deketezi.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/electric_scooters_repair_shop_near_me.pdfIn PDF document text
    • http://batut.space/john_gba_lite_app_storenqznr.pdfIn PDF document text
    • http://lnstagramverifiedsbadgeform.com/axes._io_hack_apk_modygubje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_601421c044e19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466376/normal_60141fea501b4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fe25c21150f3.pdfIn PDF document text
    • https://derovidexaw.weebly.com/uploads/1/3/1/3/131382126/8788d72a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465125/normal_602960c541d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_600fd2fe917cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405674/normal_5ff6bf16ed6f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373243/normal_6031fab2351f5.pdfIn PDF document text
    • http://hisgohar.site/tikunoxuys9jr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446489/normal_6003422353e28.pdfIn PDF document text
    • https://fewirikikekaja.weebly.com/uploads/1/3/2/3/132302896/3384731.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD773 5512 bytes
SHA-256: 4456000f52ceca05259b51026924e7f5d29669c67cd4731656f6d0514276c0f9
font_01_sfnt_off0000ea30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA30 10428 bytes
SHA-256: 6feb440fe58a232ed6f82dc67eaefb62d342aa314b40a6fd114c57c830e66c1f

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