Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdcf185ce3c9cdad…

MALICIOUS

PDF

89.7 KB Created: 2021-09-15 14:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a04b57317568c84918a7cfb1cad8fde6 SHA-1: 0b7a5e802196ae08c11e2702dede9febadc006c8 SHA-256: cdcf185ce3c9cdadcd2ec09aba3b2122c33605e09a865c296defe07b89c77c4b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, with one specifically pointing to a potential phishing lure related to 'deadpool 2 full movie watch online'. The PDF's structure and the presence of many links on disposable hosting suggest it functions as a link farm to distribute further malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://synerhu.ru/uplcv?utm_term=deadpool+2+full+movie+watch+online PDF link annotation
    • http://primethailand.com/ckfinder/userfiles/files/13051992712.pdfIn PDF document text
    • http://raylutickenterprises.com/userfiles/files/zufixotudi.pdfIn PDF document text
    • https://study-abroad-travel.com/ckfinder/userfiles/file/66612794104.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ca2fca8f2---xegoririm.pdfIn PDF document text
    • http://pattarasawat.com/ckfinder/userfiles/files/41082643430.pdfIn PDF document text
    • https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/6823335810.pdfIn PDF document text
    • http://wmasgroup.com/userfiles/file/fanikolesebaloruzevirunon.pdfIn PDF document text
    • https://vatlieutaphu.com/upload/files/71620930427.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/fuvadezadexiputorix.pdfIn PDF document text
    • https://dom-titan.rs/files/90778122801.pdfIn PDF document text
    • http://yogaschoolofkerala.com/photos/editor/files/75098312796.pdfIn PDF document text
    • https://coop-alternatives.fr/images/images/24324826124.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/bokelebipuj.pdfIn PDF document text
    • http://temple.mo/userfiles/file/fezejujukeliwi.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/86930706048.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/fusavixodobepu.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///85843608806.pdfIn PDF document text
    • http://pro-group.ru/userfiles/files/bepavo.pdfIn PDF document text
    • https://lesrimaudieres.com/images/uploads/file/50024242087.pdfIn PDF document text
    • https://quangcaomattroi.com/uploads/news_file/zalemefekovapapalozijuse.pdfIn PDF document text
    • http://gapp.fr/medias/files/divukiburitimuxi.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/62942861026.pdfIn PDF document text
    • https://habrit.tw/ckfinder/userfiles/files/keredubovufedipawek.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/58503076679.pdfIn PDF document text
    • http://imreelectric.sk/uploads/file/66066366374.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_off0000fa4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4B 17520 bytes
SHA-256: 290bc9bcaf4e7b4852ce8d07790d80e461e99a2d5cd85490d8169cbe93cf9447
font_01_sfnt_off0001274c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F63 10992 bytes
SHA-256: 018a3b932a57dbce9871fabde04a1aa6a32ff6ffc522023896a3525be765a1d1

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