Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fde3705fd92e383…

MALICIOUS

PDF

76.2 KB Created: 2021-04-04 16:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9bc8551a6f250c443ef2de639b2b8e73 SHA-1: 10b45a8ff781604625ca2e005a76024009328ae0 SHA-256: 2fde3705fd92e383acd31e1f284871b25ee84d79201c78fc11daaa308f77b388
156 Risk Score

Malware Insights

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

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 0.9996

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 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://gimoguvi.ru/123?utm_term=v+alphabet+hd+wallpaper PDF link annotation
    • http://gedoviduge.iblogger.org/film_a_frozen_flower_filmapik.pdfIn PDF document text
    • https://begatidevu.weebly.com/uploads/1/3/4/5/134596010/f8e6f0.pdfIn PDF document text
    • https://govobozof.weebly.com/uploads/1/3/5/3/135315692/02d64bdfd30b.pdfIn PDF document text
    • https://sifavebizibi.weebly.com/uploads/1/3/4/0/134040704/c327960d434012c.pdfIn PDF document text
    • http://xevuwelepudexo.iblogger.org/powowufabu.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
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_966847f69e98424e81e7afeb2f28457e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vapite/memefozuwu.pdfIn PDF document text
    • http://baxuset.rf.gd/wufonaxive.pdfIn PDF document text
    • https://d7d9470a-9784-4c28-ac68-b1ab0f70ddf3.filesusr.com/ugd/148484_2ab3d812f9014150983a7f59d0733966.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xarojapi/7134413890.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/drugs_and_their_effects_worksheet.pdfIn PDF document text
    • http://kidogip.epizy.com/xavil.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/when_does_apple_report_earnings.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/79906046390.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/vexavodoxawe.pdfIn PDF document text
    • http://lazunebenak.epizy.com/37073075790.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/github_terminal_commands_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/travel_guide_books_for_italy.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/acer_chromebook_15_cb3-532-c4zz_review.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/chaki_chaki_namak_nikal_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/aashto_constructability_review_best_practices_guide.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_off0000e22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22D 4588 bytes
SHA-256: b62f2a14ad4952fb069d46fe7c98b4320369b99e964d30daf8ec0385d174f811
font_01_sfnt_off0000f1e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E4 10344 bytes
SHA-256: c477c5a2b4a8f81c261038ac4554e890b8c6211f081f6de9d781548540bd847a
font_02_sfnt_off00011560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11560 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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