Malicious PDF — malware analysis report

Static analysis result for SHA-256 207f608bab8fc4f2…

MALICIOUS

PDF

76.8 KB Created: 2021-09-14 01:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 979d300e931de239f880ea09ba5c45fe SHA-1: 8839530be9ff38d0c72c15b44f2230d936839f85 SHA-256: 207f608bab8fc4f2ae0a9d07cda9e680104ae8c3e7d4a42ff030d2c052d150df
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs and link farms hosted on potentially compromised or disposable domains, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links indicate an attempt to redirect the user to malicious content, likely for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://coretry.ru/uplcv?utm_term=best+android+selfie+camera+app PDF link annotation
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1613620e0d1452---84632544630.pdfIn PDF document text
    • http://caythuocdangian.net/images/files/jobanuwimeber.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/juxatobibekuwaleleze.pdfIn PDF document text
    • http://kowalstwwo.pl/public/cms/images/file/kowolofasodikabisanesev.pdfIn PDF document text
    • http://masonhn.com/d/files/ginapuxesozabij.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/34740789368.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/foxezagujurekex.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/1d459a07b330af5d8485f262d92b2ede/40214660453.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d6a92e5090---wowavibitivebalira.pdfIn PDF document text
    • http://titusauto.hu/kepek/file/jisamufufulige.pdfIn PDF document text
    • http://como.gattinonimondodivacanze.it/themes/userfiles/files/22861949919.pdfIn PDF document text
    • https://krusomying.com/data/file/17182294766.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/22258243633.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/60311731928.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/barogiveximaru.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/zuvipozinurun.pdfIn PDF document text
    • https://ichibaninfotech.com/ckfinder/userfiles/files/xovivelawimakokubako.pdfIn PDF document text
    • https://designclarf.it/file/rejarutizimomese.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/77162016009.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/eu1ekqs026iq8i7kvu9ncrjl43/91574865535.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/586a80335ed860c90a21a4806a6bf7c9/70055984643.pdfIn PDF document text
    • http://planetamama.ru/files/file/jajaxutite.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/26462217062.pdfIn PDF document text
    • http://harissarantis.com/userfiles/files/bofeno.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/249e3ff238c38406a8dbeb1d0bd56948/gerizokodiwewe.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/2601569826.pdfIn PDF document text
    • http://topspeed4wd.com/ckfinder/userfiles/files/nirusajutejawo.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_off0000c5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F3 17856 bytes
SHA-256: 284650a95d8db9ae81f93ba54a7fd31eeaa270164e76789b7854f704314f03ca
font_01_sfnt_off0000f402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 10832 bytes
SHA-256: a24dc50e95d115f7cde5bfad75bc79003b4323502613fbf40b2f56a82ca13fb9
font_02_sfnt_off00010d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D03 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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