Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e7f051f4439d52…

MALICIOUS

PDF

395.8 KB Created: 2022-06-07 16:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: b336eca3db441cd64cff389c2f7bd420 SHA-1: cfd44e6657a5847779a53983284ece93c9ca710c SHA-256: f5e7f051f4439d529404e3beae2da7e8cc2200b4d3c890e5d2f4e5a3acd1590c
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it's a phishing lure using an SEO redirector. The embedded URL, 'https://lazav.co.za/XSRYdR1H?utm_term=guitar+pro+tutorial+pdf+files+download', is designed to trick users into downloading files. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further confirming its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6448

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://lazav.co.za/XSRYdR1H?utm_term=guitar+pro+tutorial+pdf+files+download PDF link annotation
    • http://drivescuolaguida.it/userfiles/files/54811807827.pdfIn PDF document text
    • http://retete.pentrugatit.ro/userfiles/file/lawiguro.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/salevudidibasa.pdfIn PDF document text
    • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/jegopevikukinara.pdfIn PDF document text
    • http://ahtirka.topmebli.com/content/xuploadimages/file/28820832442.pdfIn PDF document text
    • http://iccarrentals.com/files/file/rixaxorokedoka.pdfIn PDF document text
    • http://ilyxrace.com/userfiles/files/raduposurolubakubiwaj.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622350843f17d---23470712553.pdfIn PDF document text
    • http://lnimeina.it/userfiles/files/jawejunagomozatuveba.pdfIn PDF document text
    • http://elmbys.se/kcfinder/upload/files/fofubediwarirezeziduxa.pdfIn PDF document text
    • https://worunebifekeli.weebly.com/uploads/1/4/1/6/141688550/jojigazi_xozemezukuxus_texasujakos_dexiragenef.pdfIn PDF document text
    • https://dunowipa.weebly.com/uploads/1/4/1/8/141834080/xadugep.pdfIn PDF document text
    • https://fopilifufisi.weebly.com/uploads/1/3/6/0/136055159/95ea8a7.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/40540045201.pdfIn PDF document text
    • http://2016.letnifestiwal.pl/ckfinder/userfiles/files/pujomofenivesavugogunezu.pdfIn PDF document text
    • https://kolorubursztynu.kolorubursztynu.pl/web/uploads/files/nesabatabivakebapajazi.pdfIn PDF document text
    • https://weziriditovi.weebly.com/uploads/1/3/4/1/134108838/5136996.pdfIn PDF document text
    • https://ponutafozo.weebly.com/uploads/1/3/4/7/134705240/beroneliradim.pdfIn PDF document text
    • https://ropiwuniku.weebly.com/uploads/1/4/1/8/141875709/pozijavajorodofen.pdfIn PDF document text
    • https://xunowivoratidom.weebly.com/uploads/1/3/1/6/131636824/gozedaperomon_saxolokarum_povixoduxi_pisili.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/sabapatugipomugu.pdfIn PDF document text
    • http://asu78.ru/userfiles/file/58555815206.pdfIn PDF document text
    • https://tujuwofaxeg.weebly.com/uploads/1/3/2/8/132814826/2984148.pdfIn PDF document text
    • https://jomigotub.weebly.com/uploads/1/3/4/7/134748998/2757025.pdfIn PDF document text
    • https://tozilamuvopodes.weebly.com/uploads/1/3/5/9/135966944/digasedid_komane_tewedomesal.pdfIn PDF document text
    • https://xozipirun.weebly.com/uploads/1/3/5/3/135324749/minaxodi_foteru.pdfIn PDF document text
    • http://feg.vn/uploads/files/19986581383.pdfIn PDF document text
    • https://itracmediav5.com/ckfinder/userfiles/files/jafufulapasewew.pdfIn PDF document text
    • http://www.ww.radeton.sk/ckfinder/userfiles/files/73921437424.pdfIn PDF document text
    • https://gufunemoxopu.weebly.com/uploads/1/3/7/5/137507416/5dfab3e53ec4.pdfIn PDF document text
    • https://bk.elbasyacademy.kz/vendor/admin/kcfinder/upload/files/31314213847.pdfIn PDF document text
    • https://kepogopinojolar.weebly.com/uploads/1/4/1/3/141390308/c930fd.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/162549d051c424---waxaxezubejuzusiviriki.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/nodexeleto.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B756 10716 bytes
SHA-256: ebd39c36987fd7ca0dbb975547ed193860aa4b84b4e83848a0be5392cae1aaf9
font_01_sfnt_off0005d025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D025 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0005e837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E837 20176 bytes
SHA-256: 6272ea7448ef3768c6d2ef53759954431a815b638d415e4bdc5f58c2c3db0817