Malicious PDF — malware analysis report

Static analysis result for SHA-256 c078bac2b1d217f4…

MALICIOUS

PDF

73.9 KB Created: 2021-09-29 11:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7acafb55e7d1f0429b63fdecd3a1fc5e SHA-1: 5b492b2bd9923df0194543276d4169e3ff3c91df SHA-256: c078bac2b1d217f4230fa101ac74e01d83b7842901329d506affe950576f8768
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many hosted on compromised websites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of 'utm_term=download+photoshop+cc+2017+full+crack' in one URL strongly indicates a phishing lure for pirated software. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the phishing and potential malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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 http://lokalizacja-gps.pl/userfiles/file/8644421225.pdf In PDF document text
    • https://portecitadelle.portecitadelle.ca/ckfinder/userfiles/files/94002081089.pdfIn PDF document text
    • https://dauglita.lt/components/com_mijoshop/opencart/image/data/files/zujelaf.pdfIn PDF document text
    • http://carzip.biz/files/uploads/files/nivisinasojilunuganuvogu.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1614add090db7e---78344718199.pdfIn PDF document text
    • https://livres-arts.com/ckfinder/userfiles/files/25569302920.pdfIn PDF document text
    • https://srldirect.com/ckfinder/userfiles/files/zufivetewosadezezixori.pdfIn PDF document text
    • http://bentleyplemtech.ru/userfiles/file/83509429932.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/161416a45d1422---kidobovoxeriwunofivi.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/17474983277.pdfIn PDF document text
    • http://clean-ecology.com/Upload/files/pekedesuxeva.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/de649d4eaa2fe2eab189b98f54a3b4ed/vapedikokewubo.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/79255030492.pdfIn PDF document text
    • https://delcinfo.ru/img/files/files/zusuno.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/20767750251.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/21425934736.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/loxadategulidiv.pdfIn PDF document text
    • https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/gatanafavov.pdfIn PDF document text
    • http://norrlandet.se/userfiles/file/nagirevutalukosawig.pdfIn PDF document text
    • https://milliondollardesiclub.com/upload_files/featured/files/94045996971.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/rhen6ktdefmcc6o09f72sv3nl7/43024216965.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614cd7491742e---72130597797.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/27489326634.pdfIn PDF document text
    • https://408of53crownstreet.com/assets/media/files/26786956826.pdfIn PDF document text
    • http://modernplating.com/userfiles/file/70722223680.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/lisazugatogo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=download+photoshop+cc+2017+full+crackPDF link annotation
    • 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_off0000b885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB885 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD097 17460 bytes
SHA-256: 7c8619d9401adeb8f9d0e4b7d331f126265113d67d9082c2e947ac93c6bf91e0
font_02_sfnt_off0000fd58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD58 11116 bytes
SHA-256: df383b5411862812cd5c772fd3c900b283f305a42a466a7a62bfa4e52ee46d7c