Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b691fa91e11e50b…

MALICIOUS

PDF

90.1 KB Created: 2021-06-03 01:34:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4025df3ccf4cf40e5c9ae6f6dadad873 SHA-1: 0633207e991d61717e618bc46d0a14772c8b3d47 SHA-256: 7b691fa91e11e50b7d1a577c1aa732cdc9fc4678fdee8bee96d91a6a1b43ce74
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier with high confidence. It contains numerous external links, many pointing to disposable hosting, and a heuristic identified it as a link farm. The presence of a 'download button' lure further suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/123?utm_term=chota+bheem+new+dj+song PDF link annotation
    • https://suxewanevot.weebly.com/uploads/1/3/4/5/134595646/gosutibilokerewi.pdfIn PDF document text
    • https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/voponapidakemes_porud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413363/normal_602f4f3d618f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_60138a83221dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_6063fe165cca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495707/normal_603ae9391fb97.pdfIn PDF document text
    • https://xabetujozuveko.weebly.com/uploads/1/3/4/6/134682227/2e9998880be1f3f.pdfIn PDF document text
    • https://naduvita.weebly.com/uploads/1/3/5/9/135973463/gebot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_602b54ff16abf.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://fedorahosted.org/lohitIn PDF document text
    • http://gatasulupu.pbworks.com/f/91048593976.pdfIn PDF document text
    • http://ritijix.pbworks.com/f/a_competitive_book_of_agriculture_by_nem_raj_sunda_2019.pdfIn PDF document text
    • http://zezimin.pbworks.com/f/break_even_analysis_numericals.pdfIn PDF document text
    • http://vedufid.pbworks.com/f/diferencias_entre_presente_perfecto_simple_y_presente_perfecto_continuo.pdfIn PDF document text
    • http://redejok.pbworks.com/w/file/fetch/144529857/52843510081.pdfIn PDF document text
    • http://bovozajezo.pbworks.com/f/65184482830.pdfIn PDF document text
    • http://magogopowo.pbworks.com/w/file/fetch/144474942/jefawebor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9f3cb91-e2a2-4dac-821c-a678e9a0b6e0/5271061719.pdfIn PDF document text
    • http://bemulopawed.pbworks.com/f/botibidojagagepejux.pdfIn PDF document text
    • http://jebodigezev.pbworks.com/w/file/fetch/144530139/can_you_get_a_marriage_license_if_you_are_illegal.pdfIn PDF document text
    • http://wufamazajo.pbworks.com/f/how_to_lyrical_dance_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88958707-f7d8-46fe-9e9a-789aa8fd2572/which_zojirushi_rice_cookers_are_made_in_japan.pdfIn PDF document text
    • http://gatunam.pbworks.com/f/best_free_music_player_app_for_android_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a49e9c45-fbed-4f88-bfbe-08679a163ae4/91976073421.pdfIn PDF document text
    • http://jifesepapo.pbworks.com/w/file/fetch/144441195/rezar_el_rosario_completo_con_letanias.pdfIn PDF document text
    • http://ridelox.pbworks.com/w/file/fetch/144449631/40803781215.pdfIn PDF document text
    • http://nigezid.pbworks.com/w/file/fetch/144423516/ammo_49_dl_answers.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF131 5184 bytes
SHA-256: fb735dc400b206020b25a9e4acf101078eb1311da4f5386f20bec1a2d5488637
font_01_sfnt_off000102c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C4 2252 bytes
SHA-256: 84cb5237d7207214d531106f3adcce5de00990d4da671d9c9bc6e48987a2b689
font_02_sfnt_off00010d15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D15 10500 bytes
SHA-256: 639580cf1b1c20e1b93d7d287ede998b8c00487fb8a3e0fdd904fde119592b74
font_03_sfnt_off0001312f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
font_04_sfnt_off00013f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F2F 8224 bytes
SHA-256: e5fbc355345afcb984fc4a6966fcde53e7de75c6602cbcb2b3103a826cee2f3d

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