Malicious PDF — malware analysis report

Static analysis result for SHA-256 943eb92b7cf4fbd2…

MALICIOUS

PDF

63.3 KB Created: 2021-02-21 00:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f32769e73ca6d86abb5a0031b4c9532 SHA-1: 178f4f7935878d038d8810361751e0c1637c7136 SHA-256: 943eb92b7cf4fbd2369d71198411bc01673d9dca2a05d586be8c19b621e9db8b
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://maypoin.ru/wix?keyword=zombs+royale.io+unblocked+76 PDF link annotation
    • https://gopaxabog.weebly.com/uploads/1/3/5/3/135309926/zuvodapodilam_xetemup_xedadedivinudi_remesa.pdfIn PDF document text
    • https://kukiramofup.weebly.com/uploads/1/3/1/4/131413837/6466878.pdfIn PDF document text
    • https://sojenumodab.weebly.com/uploads/1/3/5/2/135296615/7986739.pdfIn PDF document text
    • https://kedaweva.weebly.com/uploads/1/3/4/8/134895813/3288322.pdfIn PDF document text
    • http://thedouche.xyz/157105537733mg3a.pdfIn PDF document text
    • http://xarolizanep.22web.org/pajibawigobewuvewel.pdfIn PDF document text
    • https://poxixarusel.weebly.com/uploads/1/3/4/1/134131789/137a73.pdfIn PDF document text
    • http://safetymirrors.xyz/tower_defence_games_online_hacked3bngz.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/jalasilunaz/4605841548.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/all_power_1000_watt_generator_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/zexipup.pdfIn PDF document text
    • http://wufiwujexuwinaw.epizy.com/52038713760.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/julipibupitu.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/preposition_of_place_worksheets_for_grade_7.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/28118761077.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/caringbridge_app_for_ipad.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/46616749508.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_off0000bca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA1 5612 bytes
SHA-256: 39fed7c9ca3d9bc19cb479af349939bbc96460ab28035206e499034414191669
font_01_sfnt_off0000cfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAE 9656 bytes
SHA-256: 99b9460495b93ef310f24edc04336f1adda6445769f2d7d4e95b9dfdd7883613

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