Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6940f49f44e8a5…

MALICIOUS

PDF

81.0 KB Created: 2021-09-20 18:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3af95f4c1d79c85839f19575b20f5c14 SHA-1: 76b09673d6107635194e0e3148ba109b887571d4 SHA-256: 0d6940f49f44e8a5e55d0b46a5d8d78331f6560a27146715880b5acd50836a92
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a phishing or link-farming operation. ClamAV and ML classifiers confirm its malicious nature, specifically flagging it as a phishing trojan. The presence of external URIs and a link farm heuristic strongly suggests the intent is to redirect users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://irlanc.ru/uplcv?utm_term=wolf+tv+premium+apk PDF link annotation
    • https://apteka-wratislavia.pl/halatecza/userfiles/file/senagivajumuxotaxegiwum.pdfIn PDF document text
    • http://tajesink.com/Uploadfiles/files/65074863140.pdfIn PDF document text
    • https://egokituz.org/files/galeria/files/6810277852.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/9722413094.pdfIn PDF document text
    • http://abbaorphancare.org/survey/userfiles/files/xagidexumugunewi.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/97253583501.pdfIn PDF document text
    • https://eventpro-kontraktorpameran.com/uploaded/files/lasasazebifuluba.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/59964728073.pdfIn PDF document text
    • http://photonart.nl/phpcmsys/file/25916082729.pdfIn PDF document text
    • https://hunglivet.com/uploads/files/202108311818176253.pdfIn PDF document text
    • http://xn--9d0b102a6wc3y4a.com/sa_upload/userfiles/file/20210908122958.pdfIn PDF document text
    • https://www.asoriofrio.org/ckfinder/userfiles/files/rijizifikabonoz.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/19364452297.pdfIn PDF document text
    • http://syntrend.critical.tw/upload/files/4485331806.pdfIn PDF document text
    • http://nelly-design.ru/upload/files/62586903471.pdfIn PDF document text
    • https://24emk.ru/ckfinder/userfiles/files/dogaxezolewokufalemefux.pdfIn PDF document text
    • http://podwierzba.eu/ckfinder/userfiles/files/senapopiroxubevizi.pdfIn PDF document text
    • https://projetovm.com/uploads/files/putififimuvirik.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/4158cb92e6c91e9f12b356b62047528f/18851725478.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/161475fd2af573---luwunefepusaxiborejagapu.pdfIn PDF document text
    • http://bonaparte-kerkrade.nl/fckeditor/ckfinder/userfiles/file/86557090532.pdfIn PDF document text
    • https://aljuboori.com/userfiles/files/70052362710.pdfIn PDF document text
    • http://www.stadion-zarya.ru/ckfinder/userfiles/files/rokemupelikuzidulopofaw.pdfIn PDF document text
    • http://soles2walk.com/data/file/guxek.pdfIn PDF document text
    • http://philipwillettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rapoxawataxaxuton.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_off0000d652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD652 18252 bytes
SHA-256: 903858a0d813ee6aedf85f26779c0bab20d284aa80c5d65dcc54efc57a62c2ea
font_01_sfnt_off0001062f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1062F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E46 10500 bytes
SHA-256: 470dacd1426719a89bdc727f3c4178ed4d362c30ef7374eeb2d02a2376ef7b16