Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61df9aaae9f0558…

MALICIOUS

PDF

99.1 KB Created: 2021-09-14 07:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 4fcc901023712aac9a1e9388afa50594 SHA-1: c833356ccc5a68cf6300c00e681318491e6d8541 SHA-256: b61df9aaae9f05581ab3e90cbbfdb8c5419c492b80b0ec3cfd9d2bce54c3d649
211 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://ferrocom-spb.ru/userfiles/files/92437002069.pdf In PDF document text
    • http://sethhukumchandschool.com/userfiles/file/38930963703.pdfIn PDF document text
    • http://ph-easycome.com/userfiles/file/71248793094.pdfIn PDF document text
    • http://erulingua.hu/uploads/content_files/files/rupesilakuwunub.pdfIn PDF document text
    • https://rimi.sk/userfiles/file/2559085294.pdfIn PDF document text
    • https://lbk-ingatlan.hu/uploads/file/meketifunenu.pdfIn PDF document text
    • http://kco.su/userfiles/file/8148664847.pdfIn PDF document text
    • http://ellenia3.eu/userfiles/files/wibovesad.pdfIn PDF document text
    • http://www.gulbaharsigorta.com/contentData/file/vojekedavivuguxozapod.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/7833311244.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/zapubepotosegazavenojapo.pdfIn PDF document text
    • http://vektorma.ru/uploads/assets/file/jelez.pdfIn PDF document text
    • http://ladna.pl/user_images/file/zetewexixezofuzamisele.pdfIn PDF document text
    • http://aviapartner.biz/js/ckfinder/userfiles/files/judosilaroninonisu.pdfIn PDF document text
    • https://www.institutvzdelavani.cz/files/fijifude.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614022812e6c5---vukifuzoxorogamoko.pdfIn PDF document text
    • http://professional-tuner.at/uploaded/file/96518053429.pdfIn PDF document text
    • https://thepainter.asia/upload/files/subamubimekebufisoti.pdfIn PDF document text
    • http://halaljones.com/uploads/files/15518035347.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/wobifexiduxomupek.pdfIn PDF document text
    • https://cli-kh.com/uploads/files/202109140317415702.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/leresabiluwufewerapeforuf.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/31f938da2259217b6d6f813b28836fd1/feziwopuf.pdfIn PDF document text
    • https://0900107678.com/upload/file/lisepabifuputanizo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=check+phone+apkPDF 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 extracted file (font_00_sfnt_off00011d17.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011d17.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D17 19536 bytes
SHA-256: 9043e7eb72d2f571160273cf97e8e3e3cb29a05026a8b565e7d62886170f0b1b
font_01_sfnt_off00015067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15067 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001687e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1687E 10088 bytes
SHA-256: 67186542ea78c5b4367a3cb4b0abcadeb212e63447c091419ae398a8fb96a5e1