Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e18522501b7b5f…

MALICIOUS

PDF

80.4 KB Created: 2021-09-12 09:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a6eb4cf7c47bde99b2e3d3c7f311f306 SHA-1: fa8229914fa31514b7c34c1cf57b6fe24bc9fdce SHA-256: 67e18522501b7b5fa4fdffe6f993be09d8c025c61b6557261476ecd01c25253f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs, identified as a link farm on disposable hosting, strongly suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://cructi.ru/uplcv?utm_term=wabi+mod+apk PDF link annotation
    • http://rdmsrl.it/userfiles/files/91141139961.pdfIn PDF document text
    • http://air-ned.com/uploads/files/51356061436.pdfIn PDF document text
    • http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/79495660557.pdfIn PDF document text
    • http://dfwarbitrator.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/15253760908.pdfIn PDF document text
    • http://aurastaffing.es/upload/file/dajekonunikirigakasakefi.pdfIn PDF document text
    • http://chamdure.com/DATA/files/tejimesosajiminil.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/jevozezitilujenomij.pdfIn PDF document text
    • http://generale-bureautique.fr/gdb/files/file/92342873941.pdfIn PDF document text
    • https://cabsfromheathrow.com/userfiles/file/29198378204.pdfIn PDF document text
    • http://velomagazin.hu/UserFiles/file/zegemupenakofotasefegi.pdfIn PDF document text
    • http://www.dgtrans.co.th/login/ckfinder/userfiles/files/95906356909.pdfIn PDF document text
    • http://ateliergermain.club/sites/default/files/file/50492890240.pdfIn PDF document text
    • http://spiregene.com/image/files/20210906_232240.pdfIn PDF document text
    • http://www.heatandgas.com/EditorImages/file/4771067583.pdfIn PDF document text
    • https://otterdisplay.com/userfiles/file/wosoxaxuninejipefodeferis.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/337137de773154e63bdf3fcc81ed6c6a/3949523647.pdfIn PDF document text
    • https://rwd1.thadv.com/upload/files/48180240975.pdfIn PDF document text
    • http://archi-m.ru/userfiles/file/44585041838.pdfIn PDF document text
    • https://eventpro-kontraktorpameran.com/uploaded/files/jedajelaloti.pdfIn PDF document text
    • https://alaqart.atelierleuthold.ch/userfiles/files/bevimemexofezodovatibomi.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/pegowar.pdfIn PDF document text
    • https://ww150002.linebot.net/upfile/files/20210904173638.pdfIn PDF document text
    • https://sunrise-photon.com/upfiles/editor/files/66859308487.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_off0000d6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A2 18240 bytes
SHA-256: c10eaa5aef9fcbc8235e66107bf0690c4ee0934bb8e4c5f83fd63d263c71e52e
font_01_sfnt_off000105d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D4 10128 bytes
SHA-256: b53e209f6964144fe9802d2a6ed8be479a8c4ee94986f758a155614663f98af9
font_02_sfnt_off00011c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C2F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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