Malicious PDF — malware analysis report

Static analysis result for SHA-256 b21301a69fb491db…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 20:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c4af205e00f58b0e137356863ff83907 SHA-1: d185b958b5415367c8a1c42cbfe1b054a40a1205 SHA-256: b21301a69fb491db03916cae6ac4babc2e9f398377b5b2cecc18cf06dde38c24
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://seumenha.ru/wix?keyword=algona+high+school+football+field PDF link annotation
    • https://kuvitoguke.weebly.com/uploads/1/3/0/8/130813837/b859509ea8a90e.pdfIn PDF document text
    • http://vrestoran.info/tegemepujobakuvilet8ht2l.pdfIn PDF document text
    • https://cdn.sqhk.co/fozuwasixeja/x1jh057/applock_applock_open.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/YvK2tI2/xururoxaxile.pdfIn PDF document text
    • https://nusewumu.weebly.com/uploads/1/3/2/7/132740482/d2e738.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/wjgAbiI/sudugepejasafejiwo.pdfIn PDF document text
    • https://zebaraxofalolal.weebly.com/uploads/1/3/0/8/130813897/5aae983e6.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/bTheigE/gameboy_color_backlight.pdfIn PDF document text
    • http://fsbsiod.com/33464633862m1ai3.pdfIn PDF document text
    • http://imm-shoes2.club/julupufogogobajajinenaqa4ho.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/befafuni/application_format_for_leave_from_job.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/simanidekal.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/17146321885.pdfIn PDF document text
    • http://lebozid.epizy.com/pemumem.pdfIn PDF document text
    • http://rovunebezub.epizy.com/fitness_tracker_android_6.pdfIn PDF document text
    • http://vatilibudavelit.rf.gd/penumbra_black_plague_full_game.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/amor_eterno_acordes.pdfIn PDF document text
    • http://limekukojaso.epizy.com/21963399382.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_off0000df4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4D 5316 bytes
SHA-256: b2f61e7018ce75fadc0938ad139b6b57b7ced1d2460cd6a350a5a6798448decd
font_01_sfnt_off0000f163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF163 10208 bytes
SHA-256: 56b5b6765a693c70c165a4cf25ece986dfbb7d9c314eda728340a61dcb975843