Malicious PDF — malware analysis report

Static analysis result for SHA-256 000179204e5dabcb…

MALICIOUS

PDF

76.8 KB Created: 2021-09-20 01:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: a7c9b0335b3c6d2e88948b3ecb925f00 SHA-1: 6d111da38509d97bfadf08a61da4f75733feb688 SHA-256: 000179204e5dabcbabcade2e3e659ed40772d2c21d3e184bf773b428b95f6d76
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many hosted on disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://smidgel.ru/uplcv?utm_term=mx+player+pro+apk+pc PDF link annotation
    • http://kondicionery-fryazino.ru/upload_picture/file/71880255212.pdfIn PDF document text
    • https://kirbas.com/img/uploaded/file/64769764873.pdfIn PDF document text
    • http://bebsulmare.com/userfiles/files/wururawetakolozeg.pdfIn PDF document text
    • http://saikunghouse.hk/userfiles/72207586246.pdfIn PDF document text
    • http://sourceandsecure.com/uploads/userfiles/file/jujitojukamewize.pdfIn PDF document text
    • http://daehnfeldt.com/userfiles/file/mowofuxi.pdfIn PDF document text
    • http://weorderfood.com/uploads/files/8530412336.pdfIn PDF document text
    • https://tavfelugyelet.megujuloenergiapark.hu/admin/ckfinder/userfiles/files/29008100343.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0be8cb7c1---27870047481.pdfIn PDF document text
    • http://sp2wronki.pl/fotki/fotki/file/tubisotexokemokutesutiw.pdfIn PDF document text
    • http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/56591803723.pdfIn PDF document text
    • http://westfallassociates.com/documents/file/76113865108.pdfIn PDF document text
    • http://grimastone.ru/files/razavekevemododitep.pdfIn PDF document text
    • http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/87396157686.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/feranuparip.pdfIn PDF document text
    • https://jphotographyllc.com/userfiles/file/fatewaxan.pdfIn PDF document text
    • https://shibbirs.com/media/files/kigawojibirazabevuvexadez.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/161351288f0843---kedaraxiz.pdfIn PDF document text
    • http://ranahytta.com/ckfinder/userfiles/files/roginidijixa.pdfIn PDF document text
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/80681335623.pdfIn PDF document text
    • http://csc0512.com/userfiles/file/20210920050732_4ovtzk.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/wezofokam.pdfIn PDF document text
    • https://izyskately.ru/foto/ck/files/77546237407.pdfIn PDF document text
    • http://vers-ma.de/userfiles/file/rebutibelomolij.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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC856 10204 bytes
SHA-256: 83043cef53a580a5eb91f9c6f5891822afc538bfdead4f672a2e860e73a7b911
font_01_sfnt_off0000df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF69 17940 bytes
SHA-256: 85dea25bcd972c3e6d1a64136000ea37223ee2dc3d9911db9b64a3ace3a3ddfc
font_02_sfnt_off00010dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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