Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba7684730729500…

MALICIOUS

PDF

73.1 KB Created: 2021-02-12 17:11:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ae3da87edc959c1887fc4323607e20f SHA-1: d22a6fb283945b155e3e858ae4c4aa2235a370a6 SHA-256: 0ba7684730729500cfa8093e41b09c6c02b7499569391f2da6fbfc2c6100b492
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=khan+academy+intro+to+js PDF link annotation
    • http://goloszauniver.fun/messenger_lite_app_for_mobile2p1rc.pdfIn PDF document text
    • http://lidzadva.xyz/8484338557ohlp7.pdfIn PDF document text
    • https://ruxevikupasej.weebly.com/uploads/1/3/4/6/134663562/kodewufugijidin-tejejori.pdfIn PDF document text
    • https://bozobazevadetob.weebly.com/uploads/1/3/1/6/131607158/ximogutavuti_rigazinexude_kepaku_xumareferebobi.pdfIn PDF document text
    • https://luxoxika.weebly.com/uploads/1/3/4/8/134899107/raberexiwo-sijufo.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/xaletugifudisow7kks.pdfIn PDF document text
    • http://copyright-services-us.com/joxelenazetumoxajitaruwxpkc.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/jupevuxirapi/segapedubomirujisu.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/25958712490.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/21509611791.pdfIn PDF document text
    • http://xogonat.epizy.com/chsl_2018_question_paper_with_answers.pdfIn PDF document text
    • http://nesowoxaxisaxa.rf.gd/gomugivezumazezetebufat.pdfIn PDF document text
    • http://gadudadu.rf.gd/fewotet.pdfIn PDF document text
    • http://kuwubuvorij.rf.gd/netacad_chapter_7_exam_answers_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/mulodafominepusasume.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_off0000e2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D4 5292 bytes
SHA-256: aceb0ca4c51813862a1c8700dfd608204c5d8c79dba3410547dce5e5954094ea
font_01_sfnt_off0000f4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BB 10244 bytes
SHA-256: 895c98b5f53b1d372b53b2c6f52ecd9f8acec4a643b0c25cab47b1b5d8eca06b