Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2e1606d2b2d46b5…

MALICIOUS

PDF

70.2 KB Created: 2021-09-30 10:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 5b1ac8027fa4d867ba8f1c93adb59c02 SHA-1: bd32f2e5f99f048e10a91b01e57ab7e70f5131cb SHA-256: a2e1606d2b2d46b5e5829ebe3e0feba1ed084dec5d935f009df78077ac64d627
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick the user into calling a phone number, a common tactic in tech-support scams and callback phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may host or link to malicious content, potentially exploiting PDF vulnerabilities or redirecting to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161357c8273f3d---2376084008.pdf In PDF document text
    • http://asacnfservices.com/ckfinder/userfiles/files/gisoxevamejosepodatitolex.pdfIn PDF document text
    • http://oris-am.com/editor_up/govemavexofupelewi.pdfIn PDF document text
    • https://wanna-drive.nl/files/File/33216849169.pdfIn PDF document text
    • http://nhadep30giay.com/uploads/image/files/luxokelabikitozid.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/fokivo.pdfIn PDF document text
    • http://iehyun.com/editorupload/file/moziwasalapeboxemojot.pdfIn PDF document text
    • http://tidomusica.com/uploads/files/202109230507081123.pdfIn PDF document text
    • https://assignmentmart.com/ckfinder/userfiles/files/wokizexixine.pdfIn PDF document text
    • https://www.indoorclub-informa.com/boletines/img/file/50018317765.pdfIn PDF document text
    • http://bctlorraine.org/userfiles/file/76495533208.pdfIn PDF document text
    • http://dfwarbitrator.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/79930750119.pdfIn PDF document text
    • http://francescofesta.it/userfiles/files/85013209455.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/fefor.pdfIn PDF document text
    • https://yomadesign.com/userfiles/Proj_Name/files/nakodabeximezuneve.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/161328ce669dfb---bujopuruv.pdfIn PDF document text
    • https://produse-zilan.ro/files/71526173079.pdfIn PDF document text
    • https://www.lsv-wittlage.de/ckfinder/userfiles/files/taruxixizabu.pdfIn PDF document text
    • http://dreesmann-foto.de/userfiles/file/niletata.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/vafaseladumibasuwu.pdfIn PDF document text
    • https://creativitagh.com/pevron/www/img/file/73554405278.pdfIn PDF document text
    • http://epmachine.ru/d/files/52719890150.pdfIn PDF document text
    • http://solar-makernavi.com/ckfinder/userfiles/files/xorazotufirepu.pdfIn PDF document text
    • https://lingchuanfloor.com/app/webroot/userfiles/files/57069814570.pdfIn PDF document text
    • https://ctapigroup3.com/contents/files/48068500643.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/88545034460.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=harry+potter+7+part+1+full+movie+freePDF link annotation
    • 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_off0000b620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB620 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ce32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE32 16928 bytes
SHA-256: 45e9f4b8518974e43c5cad5d1ece489406ea510d8e661c5ec8b88aec8ca33a78
font_02_sfnt_off0000f989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF989 10620 bytes
SHA-256: aa0f760b24f8d0a9719d75a67511589f6d87fefa81005529e9ba811aa9736f4d