Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d8283c4a369bfb…

MALICIOUS

PDF

79.3 KB Created: 2020-12-30 19:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1a10e4715b2d071ff4ef2a1ee271d101 SHA-1: e677aa365382e0f23ed9bd8d911742b497eb1488 SHA-256: b3d8283c4a369bfb65024477740f5338ee08baa6ecb16f2de883c19e833c0e54
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm with 26 external PDF links, including one pointing to 'pewofofuvalok.weebly.com', suggesting a phishing or scam attempt. The embedded URL 'https://traffnew.ru/wb?keyword=minecraft%20download%20size%20ps4' indicates a lure related to game downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/wb?keyword=minecraft%20download%20size%20ps4 PDF link annotation
    • https://pewofofuvalok.weebly.com/uploads/1/3/0/7/130775386/wofademukexu_najogizate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505125/normal_5fd9d5f747655.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/wtnLFhj/fabojotetuner.pdfIn PDF document text
    • https://totamozosapopa.weebly.com/uploads/1/3/4/7/134712517/8702319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5fa69ea1dcc06.pdfIn PDF document text
    • https://bemebedutor.weebly.com/uploads/1/3/4/6/134624352/sizajuzexusuvi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/somisilegex/abrahaminte_santhathikal_full_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/kuvilodefivatomav.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/harry_potter_hogwarts_mystery_friendship_level_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d68af06e-59c3-447d-b7ef-b6ee805a582c/ver_pelicula_la_la_land_online_latino_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/axinterop._acropdflib._dll_64_bit_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/bd_facsaria_iii_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b0a8fa-aff9-440c-b651-6d5d4c7d6b87/43539569006.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD504 2888 bytes
SHA-256: ea50ec86c3f6ceeb61b9b45c59bf5a0a89b2c23f1babc4c41f5966f35669c964
font_01_sfnt_off0000df48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF48 5384 bytes
SHA-256: ebe10098d965fd31cb958c520ba89c4d87b49a940cb11495b2aa88ce4274770d
font_02_sfnt_off0000f1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D8 12600 bytes
SHA-256: a7188cb229249e8424050f20df9af21e0b1f60a77e9b7f6892e3ffb0014adcde
font_03_sfnt_off00011b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B07 16060 bytes
SHA-256: 313c3940a6f4aae92ceaa1b1a843de6e6f13411355a457aba6e018c383fce54c

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