Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f479c22917e67b…

MALICIOUS

PDF

292.8 KB Created: 2022-01-24 14:06:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 5a9394235ab2cd9b14078e120e487338 SHA-1: 98016e602566dc95040d9e0854952e289debefa2 SHA-256: a4f479c22917e67bf6b2f46e64d935c46e3fc793b7dff826158e16677f6852f0
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7430

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://ketchas.ru/uplcv?utm_term=autocad+mep+2015+crack+free In PDF document text
    • https://grandinhr.eu/images/user/file/42236278962.pdfIn PDF document text
    • https://gyvatukai.manovonia.lt/images/files/jolirutap.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/pukigerotiji.pdfIn PDF document text
    • https://petikdaun.com/contents/files/juwerafalivawegezogerap.pdfIn PDF document text
    • https://slide-bearing.com/d/files/vadexutetik.pdfIn PDF document text
    • http://tubesealer.com/uploaded/file/10413705036150724234d40.pdfIn PDF document text
    • https://www.poole.ed.jp/system/ckfinder/userfiles/files/gugup.pdfIn PDF document text
    • https://pchome.uzai.ca/upload/files/70928451411.pdfIn PDF document text
    • https://atlanticcompact.org/userfiles/files/64574891255.pdfIn PDF document text
    • https://inprovitparaguay.com/ckfinder/userfiles/files/18833239142.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/wopesozipodu.pdfIn PDF document text
    • http://schoonhovensvrouwenkoor.nl/ckfinder/userfiles/files/9964513009.pdfIn PDF document text
    • http://lesbambousbleus.fr/ckeditor/upload/files/kifipofepagovogo.pdfIn PDF document text
    • https://nesselaarbestratingen.nl/plaatjes/file/vorepejewogumavoji.pdfIn PDF document text
    • http://flomojapan.com/upload/files/32706845159.pdfIn PDF document text
    • https://0800-707-808.com/upload/ckfinder_temp/files/20211024120323.pdfIn PDF document text
    • http://columb-sklep.pl/userfiles/file/jogiwubefafeturevotina.pdfIn PDF document text
    • http://talk200.com/admin/admin/uploadfiles/file/xozerukoguxorojinowi.pdfIn PDF document text
    • http://tlcjty.cn/userfiles/aa/file///rasufekoloxulefejivasufak.pdfIn PDF document text
    • http://unite-chem.com/upload/files/69531955167.pdfIn PDF document text
    • http://playos.net/data/playos.net/uploadfiles/file/84652706934.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/33732114417.pdfIn PDF document text
    • http://namngonviet.com/user-/files/16572751320.pdfIn PDF document text
    • https://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/28543883181.pdfIn PDF document text
    • http://www.annaleehuber.com/content_files/file/70607224779.pdfIn PDF document text
    • http://foreverymuslim.net/home1/forevev3/public_html/foreverymuslim/upload/file/zibowanu.pdfIn PDF document text
    • https://used-machinetools.ro/app/webroot/files/userfiles/files/gamogidapelitanolel.pdfIn PDF document text
    • http://stevis.cz/files/file/80162433698.pdfIn PDF document text
    • https://dogudokum.com.tr/panel/kcfinder/upload/files/tukixanamagaxi.pdfIn PDF document text
    • https://www.privathospitaletkollund.com/ckfinder/userfiles/files/96719761133.pdfIn PDF document text
    • http://officeharbor.com/pdtInfo/52955814070.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00042886.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00042886.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00042886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42886 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00043f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43F25 16508 bytes
SHA-256: 61f1ca39c98be69cdd7d131bb8e7f38f691ffb2226622e897800ed0a128bf764
font_02_sfnt_off00046a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46A3E 10972 bytes
SHA-256: 9858cf298ed85248aa7ff4ede58a89d897446c2227c1095433c8d747594672a8