Malicious PDF — malware analysis report

Static analysis result for SHA-256 4893ccb98fd6da8c…

MALICIOUS

PDF

82.0 KB Created: 2021-06-15 11:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 49d8ed1b5bff33acde53b281c2c13600 SHA-1: c81fbdee1c5aab83f67a1007c05b249b57f02851 SHA-256: 4893ccb98fd6da8c3ee28e4ea6e263610f44105542258bc841e2246b4ee3f7b1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pixomot.ru/pbw?utm_term=cs+go+mouse+sensitivity+pro+players PDF link annotation
    • https://vubujoxesawuzar.weebly.com/uploads/1/3/4/4/134476738/dibefula_jurujefemakija_pimeguse_pudanopiw.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/22b39d4f60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451228/normal_6020b5c1078b2.pdfIn PDF document text
    • https://mizilugodipibo.weebly.com/uploads/1/3/0/8/130813887/6779813.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374537/normal_5fdc9afa7f1d6.pdfIn PDF document text
    • https://jikevisanudopud.weebly.com/uploads/1/3/4/0/134017539/9b85826cae3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pezeliv.pbworks.com/f/new_haryanavi_song_2020_download_mp4.pdfIn PDF document text
    • http://gegoxelaw.pbworks.com/w/file/fetch/145143060/sawegupatazodal.pdfIn PDF document text
    • http://sutodoromar.pbworks.com/f/mudadawuzumipepelixugavi.pdfIn PDF document text
    • http://bopidix.pbworks.com/f/gigeletidajoluzifale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211f0718-416c-40ff-a32b-5226c838fcfe/bifox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a6cf206-6777-4940-b269-249418f39a69/vafidozavosu.pdfIn PDF document text
    • http://silasofinat.pbworks.com/w/file/fetch/144443190/rifawegezakebazokiribura.pdfIn PDF document text
    • http://junerew.pbworks.com/w/file/fetch/144599100/endnote_x9_free_download_for_pc.pdfIn PDF document text
    • http://kokoxudalux.pbworks.com/f/cuadro_comparativo_estadistica_descriptiva_e_inferencial.pdfIn PDF document text
    • http://wiwedano.pbworks.com/f/how_to_remove_lspdfr.pdfIn PDF document text
    • http://subuzuj.pbworks.com/f/rabonipikur.pdfIn PDF document text
    • http://vakerul.pbworks.com/w/file/fetch/145303221/jayam_manadera_songs_mp3_download.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 5208 bytes
SHA-256: 1d6ce11c7276ce2168919c18a662d28afbc8a9300eade2d69e0b24c9b9cde1e2
font_01_sfnt_off000106bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106BD 10620 bytes
SHA-256: 566c149296cefb278a6cf0d786ff272b2a3a150e77272a9ed7f00312efe2d455
font_02_sfnt_off00012ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AE0 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.