Malicious PDF — malware analysis report

Static analysis result for SHA-256 065a463f8b10453b…

MALICIOUS

PDF

69.9 KB Created: 2021-02-22 19:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 40e6f5e2f5495112dd720940f3f8030c SHA-1: b0a610366e134262bfb8b23e82a080ea5d833c43 SHA-256: 065a463f8b10453bacd8ef8b84033fbefb11f4caa37b25d21cbede1b5f9587a8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://bologen.ru/wix?keyword=scott+county+warrants+iowa PDF link annotation
    • https://kofudavobew.weebly.com/uploads/1/3/4/6/134602163/tezimadava-giver.pdfIn PDF document text
    • https://fojozotewimoko.weebly.com/uploads/1/3/5/3/135324817/390543.pdfIn PDF document text
    • https://xajimago.weebly.com/uploads/1/3/0/8/130813364/c668bf.pdfIn PDF document text
    • http://razvivatel.blog/osmosis_jones_questions_and_answerswvyhu.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/futamejozokukeletir.pdfIn PDF document text
    • https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/d43ab734daecd0.pdfIn PDF document text
    • http://itslm.fun/ary_news_the_reporters_todaykpdjo.pdfIn PDF document text
    • http://whysmall.space/nuxixalolamedogebib20gr.pdfIn PDF document text
    • https://xikewewojan.weebly.com/uploads/1/3/4/0/134095915/pojakug.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/zidenigad/molosovilaw.pdfIn PDF document text
    • http://lazunebenak.epizy.com/nefikinit.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/bureaucratic_organisation.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/bittencourt_penal_1.pdfIn PDF document text
    • http://koronejukijon.rf.gd/xawol.pdfIn PDF document text
    • http://nodefojabotozij.rf.gd/eclipse_ide_for_java_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/72625872314.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_off0000d571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD571 5060 bytes
SHA-256: 38d617190be513fd0917a3be32b0bdd4adeb28b673faa1b2c18f6b68fe4bcd15
font_01_sfnt_off0000e6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CF 10588 bytes
SHA-256: 832ecf109755257dec6a415d6770d388fe959443c9309e791fbfc3033adc5405