Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06f920bef16a705…

MALICIOUS

PDF

80.2 KB Created: 2021-02-25 10:13:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9f05954148e8b47ebda8d90c86c8c61f SHA-1: 4c69afa4938d8ba325969974d1b0ed64e260927a SHA-256: e06f920bef16a70559472add47384eb0a4e88ac85b0f2399908614afb4e004a4
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as redirectors or part of an SEO link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely aiming to redirect the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=english+vocabulary+list+themes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5fd1665e71736.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/jchjB3c/55723509617.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_600eb12529bce.pdfIn PDF document text
    • https://nutewoxob.weebly.com/uploads/1/3/0/8/130814783/modugexiwe_xedigodelinuk.pdfIn PDF document text
    • https://cdn.sqhk.co/buzomesil/g4GOTia/world_war_z_gameplay_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468572/normal_600e659959b14.pdfIn PDF document text
    • https://ranitezal.weebly.com/uploads/1/3/1/4/131438109/860497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375894/normal_602b90a903df8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jonora/totally_accurate_battlegrounds_apk.pdfIn PDF document text
    • http://gokujipavelidaz.rf.gd/ek_chumma_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/47098364982.pdfIn PDF document text
    • http://javisan.epizy.com/attu_full_movie_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/lowige.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/jakowokesulozi.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/74783338482.pdfIn PDF document text
    • http://kababotatage.epizy.com/47566832077.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE057 5472 bytes
SHA-256: 7beb0953ab78ee2165233892db44f8540d64ca9c7e596561157cfdeac8987967
font_01_sfnt_off0000f2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DB 5272 bytes
SHA-256: 86106e9c6703c90add9617e18ba0f4dba1b39a12e29a3683f7f810aa4d7d2791
font_02_sfnt_off00010603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10603 11328 bytes
SHA-256: 920d54111634950df2d55161bb7ff638003a781f7e4a440365bb04e786f89c1d
font_03_sfnt_off00012bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BFB 1740 bytes
SHA-256: 0fa38b11e28a8990e1b947714e894fba9dc87d533679748745bc540cfc52814c

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