Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea02df31eb86294c…

MALICIOUS

PDF

73.9 KB Created: 2021-03-20 07:58:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d0c9bc8b4f145d75462d85ed2051c0c8 SHA-1: f3165a7b9a66cafe9f46293c345d9e8623044ac6 SHA-256: ea02df31eb86294c84935a7d1fe87b56c7daf7a7b925d0884c670b7637fa35e7
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic firings point to the document being a link farm on disposable hosting, with numerous external URIs embedded. The document body, though heavily obfuscated, contains references to a 'space hulk painting guide' and application metadata, suggesting a lure to disguise malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/wix?keyword=space+hulk+painting+guide PDF link annotation
    • http://flylovel.com/90735865913sa2jl.pdfIn PDF document text
    • http://pivojowemetobiv.mywebcommunity.org/gimexizipi.pdfIn PDF document text
    • https://cdn.sqhk.co/dexizajifu/rxWiggf/events_definition_in_tourism.pdfIn PDF document text
    • https://dukidisivaturan.weebly.com/uploads/1/3/5/3/135311912/4306392.pdfIn PDF document text
    • https://zomuguwiremadak.weebly.com/uploads/1/3/1/4/131406071/detoxuwimazewifaveza.pdfIn PDF document text
    • http://kvrovk.xyz/kijexibigibosotodipertcz27.pdfIn PDF document text
    • http://smotrikino.fun/392348733171yt1j.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/faxakinonitipomon.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwolupenilu/Rgi27Wy/mv_btob_beautiful_pain_720p.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/587074.pdfIn PDF document text
    • http://rapejavom.22web.org/41245312909.pdfIn PDF document text
    • http://degunagafawubap.iblogger.org/42745849365.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/egiXfo3/bowatubajixipemawukix.pdfIn PDF document text
    • http://shtancircul.site/android_10_telephone_compatible_samsungv8scp.pdfIn PDF document text
    • http://serururepus.scienceontheweb.net/fataretomitumo.pdfIn 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
    • http://nesitojogosew.epizy.com/anniyan_tamil_movie_hd_video_songs.pdfIn PDF document text
    • http://tivuduke.rf.gd/dufizemu.pdfIn PDF document text
    • http://farudigenudoze.onlinewebshop.net/business_analyst_cover_letter.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/dotanawamoniritokuzo.pdfIn PDF document text
    • http://muwalolerede.epizy.com/23541892406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5BE 5000 bytes
SHA-256: 552a43dc2ab394ab9c01a58bedd230c4e59cfe5b71072937d595dcd74029232a
font_01_sfnt_off0000e6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AC 10760 bytes
SHA-256: 3da3ee866996801c3570c3d2d5debab4671cc79fb327bf1a38be5c1e45b2d427
font_02_sfnt_off00010aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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