Malicious PDF — malware analysis report

Static analysis result for SHA-256 00037ab3ea7d9a13…

MALICIOUS

PDF

69.7 KB Created: 2021-09-26 06:10:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 142e0f90546271c8b11e444ddbac8c09 SHA-1: b0c32bee4995f32b4c6cebdf16150dca520c35d0 SHA-256: 00037ab3ea7d9a13a42b676889c8eeefc8a9a1abd6652f586aea136a95a4eeff
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the PDF structure point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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.
  • 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://pixomot.ru/uplcv?utm_term=mp3+mp4+free+download PDF link annotation
    • http://sirindhorn.net/upload/File/94327601237.pdfIn PDF document text
    • http://hostingureitings.lv/uploads/userfiles/files/31018562277.pdfIn PDF document text
    • http://heninrealty.com/userfiles/files/vanofawuji.pdfIn PDF document text
    • http://soc-in.com/data/media/files/83483210735.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/1e8b7d2fab8e8e4ec939a46b49280f1b/gibewotut.pdfIn PDF document text
    • http://tentimesneedlehill.com/UPFILE/userfiles/files/69482067005.pdfIn PDF document text
    • https://aildf.in/userfiles/file/bamewokoxefelasago.pdfIn PDF document text
    • http://studiodabo.eu/userfiles/files/gufojodujudiwebufomira.pdfIn PDF document text
    • http://mskgroup-spb.ru/upload/file/33482900694.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139dc52b7dc1---17823910179.pdfIn PDF document text
    • https://livermore.com/wysiwygfiles/file/94614388607.pdfIn PDF document text
    • http://vdtonline.vn/static/uploads/editor/files/legun.pdfIn PDF document text
    • http://cofetariafraguta.ro/UserFiles/file/92182403213.pdfIn PDF document text
    • http://guowangcable.com/d/files/tasedas.pdfIn PDF document text
    • http://mama-care.com/UserFiles/file/xodakenuxawa.pdfIn PDF document text
    • http://clinicaveterinariagussago.com/userfiles/files/fatab.pdfIn PDF document text
    • https://ermolino.mebel18.com/uploads/files/zanivafomumelafetifaf.pdfIn PDF document text
    • https://servicepapik.ro/files/berosatoxexedu.pdfIn PDF document text
    • http://viswinkelindex.nl/images/uploads/bupenapitawalowiwo.pdfIn PDF document text
    • https://xuanhongkhang.com/upload/files/koxobe.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/wever.pdfIn PDF document text
    • https://www.retake.dk/ckfinder/userfiles/files/murinukix.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/15327712649.pdfIn PDF document text
    • https://landatur.com/files/galeria/files/77369944631.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_off0000b23b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB23B 10632 bytes
SHA-256: 89a9cb8af63151c589204942a8ec7b326ac80568ebe0bc85cd8816119187dc76
font_01_sfnt_off0000caa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B2 15352 bytes
SHA-256: 0f04528260bc86c808000f0ecb82a8642ba1c793f7b86485023c279ddb3720a8

Open this report in the interactive analyzer, or submit your own file for analysis.