Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e94973109a8905…

MALICIOUS

PDF

75.8 KB Created: 2021-02-16 09:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 463e217e2444968a88012b474f9f34d0 SHA-1: 6b77fac73bbfc7f39be6a16a1cadb965e4d92785 SHA-256: a6e94973109a890548cf98e6ee78f632604a84bbd73e4ff9cf211bdfe0b26a29
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=the+leftovers+ending+meaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421218/normal_5fe5414325a96.pdfIn PDF document text
    • http://damisidituwupo.iblogger.org/terabobajiji.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/jHgjn8Z/koala_bear_grill_galt.pdfIn PDF document text
    • http://devlp.design/kepiluwesfyn0n.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/qCidhaB/zasolixisigevusukegorozal.pdfIn PDF document text
    • http://english-10.site/mifixonoguxubuvuxula1jf2.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/f1a8XkQ/lowes_black_friday_2019_pressure_washer.pdfIn PDF document text
    • https://cdn.sqhk.co/tofigidukug/jhcia1k/26305154116.pdfIn PDF document text
    • http://kind-insta.site/istvan_meszaros_beyond_capitaluhvhn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_60110e0cc979b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://banitazivi.epizy.com/aegisub_3._2._2_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/brain_structures_and_their_functions.pdfIn PDF document text
    • http://suwetiwojiza.rf.gd/nunupenujotobabexefog.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/kathi_tamil_movie_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/carnival_of_rust_full_song.pdfIn PDF document text
    • http://xesupunugotim.rf.gd/kimevexut.pdfIn PDF document text
    • http://pakurowomeki.rf.gd/namovas.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/finagulafukun.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_off0000ec48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC48 5332 bytes
SHA-256: 5208832fb372709183140f1755a67fb4d1786a1f9927048a0d25ebbf5d07b341
font_01_sfnt_off0000fe42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE42 10704 bytes
SHA-256: 6b16d2564fcdd714bccfefe2fb6932c0d3f6437a863af06b8f3c66b38672481a