Malicious PDF — malware analysis report

Static analysis result for SHA-256 0601096808fe86ec…

MALICIOUS

PDF

70.4 KB Created: 2021-09-28 09:03:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 8c1ed4cac5a3b31b00321bcc26637f30 SHA-1: c3b481a137e8b5987bf9749c6403668bed0f3ee5 SHA-256: 0601096808fe86ecc6aa18ba4537ef9f2897dc0d6e1438f7cfedc3d3547a572e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to disposable hosting and act as a link farm, with one URL specifically mentioning 'fifty shades of grey 2 full movie download'. This indicates a lure to potentially malicious websites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or malicious content distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://nomylo.ru/uplcv?utm_term=fifty+shades+of+grey+2+full+movie+download+filmywap PDF link annotation
    • http://fairbank-ia.org/admin/ckfinder/userfiles/files/8680004970.pdfIn PDF document text
    • http://goldartline.ua/userfiles/file/wamekogitemadirenasevo.pdfIn PDF document text
    • http://wwstationery.com/files/file/nesabefupefe.pdfIn PDF document text
    • http://iccjsc.vn/images/uploads/files/wonovudifibovalasanuxuk.pdfIn PDF document text
    • http://dsagco.com/Upload/file/jinalowogep.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/de3ace85bc74a7a71fe91862f4b2fe3f/44450712301.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/31284884205.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/tozokezolifekawolafe.pdfIn PDF document text
    • https://pbpkrosno.com/fckfile/nebali.pdfIn PDF document text
    • https://eletvital.hu/uploads/files/papemebigoga.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/19r3r2b1ohea03l1dlijp0t6i2/zixodorij.pdfIn PDF document text
    • https://latework.cz/soubory/71378183198.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/43985080838.pdfIn PDF document text
    • http://ikcem.org/userfiles/file///ridivowinimag.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/zilojozepirin.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/20174624751.pdfIn PDF document text
    • http://glttek.com/userfiles/file/99076379708.pdfIn PDF document text
    • https://castilloexterior.net/ckfinder/userfiles/files/jaxedo.pdfIn PDF document text
    • https://sealordhotels.com/ckfinder/userfiles/files/64863259323.pdfIn PDF document text
    • http://flex-link.cn/uploadfiles/files/kifopukevigafufubovuriz.pdfIn PDF document text
    • http://roland-toys.eu/userfiles/file/11118266728.pdfIn PDF document text
    • https://beylikduzutabelaci.com/userfiles/file/94739593300.pdfIn PDF document text
    • http://suamanhinhlcd.net/userfiles/file/kobazivowa.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_off0000b0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B2 15540 bytes
SHA-256: 79f3c5f1b0f92022e16a77463b1c65fef9b9a18cbb4c92873a8d70f21720a06c
font_01_sfnt_off0000d868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD868 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f07f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF07F 11408 bytes
SHA-256: caf33117e262d536c374c696c55d69a4af42464698bec70449c1af5ed3c7bee3