Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ca9242f2f599ee…

MALICIOUS

PDF

73.2 KB Created: 2021-02-26 20:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3fc822b9a4b39be0436c40bf04d80548 SHA-1: 4a6960a1f1bde6e7e70f5955bd58c0ae3aa80ba7 SHA-256: 22ca9242f2f599eeff2b5e523d7c143b33fb809ade7ad4d0a2d8efb570718ec8
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://resalured.ru/award?keyword=osi+tcp%252Fip+layers+and+protocols PDF link annotation
    • https://zedazepofa.weebly.com/uploads/1/3/0/9/130969939/tesiviwukovanuxofe.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/the_vampire_diaries_cast_in_the_originals.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/what_is_the_process_of_rock_formation.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/73359120981.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/the_diamond_of_darkhold_ending.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/87562677684.pdfIn PDF document text
    • http://lg-copyright.com/nulewuvejequph.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/fifuto/biharwap._in_2018_song.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/81797345162.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/96574950266.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/first_nations_metis_and_inuit_food_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/what_is_the_spiritual_meaning_of_692.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/nikon_d5200_camera_settings.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_off0000e299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE299 5232 bytes
SHA-256: 34036026d188a07f217dc2d1bd58cb2142433e888abd2c7c3eae35232f4983cf
font_01_sfnt_off0000f485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF485 10248 bytes
SHA-256: 491a38dfc92abc73395c7646a9e17ba60c7bf9dc3df0d987949599b09ee9172b