Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fc6d78ee3cb456…

MALICIOUS

PDF

77.6 KB Created: 2021-03-10 00:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8d6a7bc3e9c453e7a23a13a3c57d6f01 SHA-1: 6fb4226ca9366153d12678e557b20fa5b74e4921 SHA-256: 22fc6d78ee3cb456048abab04a1c4964aa6f0875dafd28f34878359a5c6d6ec1
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL suggesting a lure related to 'Dillon 650 toolhead setup'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, reinforcing the phishing or malware distribution intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect users to malicious sites.

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://druttle.ru/strik?utm_term=dillon+650+toolhead+setup PDF link annotation
    • http://martakkord.ru/tagadadoxizu8ptvk.pdfIn PDF document text
    • http://raxaterov.iblogger.org/4284357338.pdfIn PDF document text
    • http://euroshopmn.space/sublease_agreement_template_ontario8y9jd.pdfIn PDF document text
    • https://mexukisigugat.weebly.com/uploads/1/3/4/7/134702857/gerarubadelaw.pdfIn PDF document text
    • http://iclod.tech/who_owns_news_nation_indiat633p.pdfIn PDF document text
    • http://youtube-subscribes.com/fowuduxifeweru1g7c6.pdfIn PDF document text
    • https://tokubarip.weebly.com/uploads/1/3/1/3/131380438/7e23c36.pdfIn PDF document text
    • http://katalog-siberian-force.online/2615467800882zln.pdfIn PDF document text
    • http://pushbiz.fun/fepojidazusutigitekezav7qfw4.pdfIn PDF document text
    • https://nuvarimo.weebly.com/uploads/1/3/1/3/131378817/fepizojem.pdfIn PDF document text
    • https://devojakosumu.weebly.com/uploads/1/3/5/3/135314674/bf1a8424f6.pdfIn PDF document text
    • http://rubeparef.22web.org/fukusiwutadasogavuxe.pdfIn PDF document text
    • http://zyzycheat8.xyz/capped_brood_and_queen_cellslw4bj.pdfIn PDF document text
    • https://tagakokiginozol.weebly.com/uploads/1/3/0/7/130775172/mekulafi_pulered.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jagodamafa.rf.gd/bigejifafuso.pdfIn PDF document text
    • http://puxetedategekex.epizy.com/zoxukiminesatudo.pdfIn PDF document text
    • http://libizokize.rf.gd/made_to_stick_book_amazon.pdfIn PDF document text
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_1076cf14204d45e6b444d7e726bb39ac.pdf?index=trueIn PDF document text
    • http://rexawisoza.epizy.com/24363766250.pdfIn PDF document text
    • http://vopimivukaf.epizy.com/food_brochure_templates_online.pdfIn PDF document text
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_3771c655cfaa4e59a0bf4c4cda84cf2d.pdf?index=trueIn 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_off0000f32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32C 5368 bytes
SHA-256: f05c46c058035b7243c1748847f3eececf1a81232a4268cb570e064e62c3cd3e
font_01_sfnt_off00010574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10574 10476 bytes
SHA-256: ff71510b42d1a6bb77e355f3bc4c8824a56bfbaf8e9bc9fa366d13126f93d176

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