Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba32d495362a434f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 18:51:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3d7eb9cfabdb9c6e3413c01e9f59be14 SHA-1: a49bb4e663c36cb411885b83bf2349d169ece070 SHA-256: ba32d495362a434fc7476a3f5ea32e37a49efc4dbd514e72a8cd5451d05204e5
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://jottigo.ru/wb?keyword=chains%20laurie%20halse%20anderson%20summary PDF link annotation
    • https://cdn.sqhk.co/zejizoguzut/haCK6ew/94997315404.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/jesexumarofiki.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/ghghfii/run_hulu_2020.pdfIn PDF document text
    • https://wanesutilujat.weebly.com/uploads/1/3/4/8/134868149/9671721.pdfIn PDF document text
    • https://cdn.sqhk.co/mebereserab/jaihgV9/scary_granny_doll_the_horror_game_2020.pdfIn PDF document text
    • https://jigupeditu.weebly.com/uploads/1/3/1/3/131380623/rotuzejagu.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/fwrd28R/xexonapubuvetigixaj.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/6h4CicR/52556341543.pdfIn PDF document text
    • https://motetokazifizi.weebly.com/uploads/1/3/4/8/134885494/1502007.pdfIn PDF document text
    • https://gupufema.weebly.com/uploads/1/3/4/4/134456882/4144585.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/jivamubug/53248829331.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/29376498061.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/66640044876.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/anthropology_notes_for_ias.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/dakititonetaxoriloduxuwus.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_off0000e00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00F 5072 bytes
SHA-256: 43a06cf1cbb1a24507428745f6d720404b02e532207446685d30fcf3dbd66b62
font_01_sfnt_off0000f120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF120 10144 bytes
SHA-256: 5fa155aac0c045a85b360e074b6f7b79c596a7ab2257a628827492f519e83d36