Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bd2f01947d7de8…

MALICIOUS

PDF

76.8 KB Created: 2021-04-01 00:30:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a80290d27bc7de24c3cc31501c76825f SHA-1: 50d68349b9f0736bac1e6f51a1a8b5998be5b178 SHA-256: 89bd2f01947d7de8da6e3f6bf2c016733870af67ba57cbd0492257142fe2d124
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit the user through a malicious link, likely disguised as a helpful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/123?utm_term=mcdougal+littell+resource+book+geometry+answers
    • https://cdn-cms.f-static.net/uploads/4412570/normal_5fdb3570b7468.pdf
    • https://cdn.sqhk.co/sezivalaw/idijkib/fall_guy_video_game_review.pdf
    • https://cdn-cms.f-static.net/uploads/4385011/normal_60554e10437d3.pdf
    • https://cdn-cms.f-static.net/uploads/4413714/normal_605cdc071c300.pdf
    • https://cdn.sqhk.co/kovezozeseg/bshdIsc/xesiniworuvidevasuxuzaze.pdf
    • https://cdn.sqhk.co/mugolino/hahaWhi/fejezuxafuvewiro.pdf
    • https://cdn.sqhk.co/jijasitov/jdfVSie/28943319792.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bagisi/investment_banking_valuation_leveraged_buyouts_and_mergers_and_acquisitions_valuation_models.pdf
    • https://s3.amazonaws.com/silubebebefuju/raliwananaxog.pdf
    • https://s3.amazonaws.com/jotizifime/gunizukarasusazofe.pdf
    • https://s3.amazonaws.com/sukedil/python_for_data_science_cheat_sheet_pandas.pdf
    • https://s3.amazonaws.com/dowesitobuga/how_often_to_change_oil_2013_prius.pdf
    • https://s3.amazonaws.com/zazelujeju/2077893174.pdf
    • https://s3.amazonaws.com/jepinebawo/ramonoz.pdf
    • https://s3.amazonaws.com/satulibaren/17107214449.pdf
    • https://s3.amazonaws.com/verirejon/fiberglass_insulation_safety_data_sheet.pdf
    • https://s3.amazonaws.com/vexosafugunu/how_to_replace_carrier_furnace_control_board.pdf
    • https://s3.amazonaws.com/napejaxosinages/23837943403.pdf
    • https://s3.amazonaws.com/luworizesupox/photo_song_whistle_ringtone.pdf
    • https://s3.amazonaws.com/tiduro/standard_sheet_metal_gauge_sizes.pdf
    • https://s3.amazonaws.com/pilazi/nstemi_guidelines_executive_summary.pdf
    • https://s3.amazonaws.com/fidobakipivogit/facebook_like_bot_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea4c.bin
1d4bb50bf15d939e81f8b04c2bbd4f93d17c3527274d31c110d139098d1237cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4C 5664 bytes
font_01_sfnt_off0000fda7.bin
87ff1ceca075e08f8224a1922f04d827a664c5a6b855471f6d4538a330c3104c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA7 11636 bytes