Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e723c22bbbad27…

MALICIOUS

PDF

82.7 KB Created: 2021-05-10 00:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 228421d93532c7b2ce7cfac41a70074d SHA-1: 1eed3248310eeee21ba8161ffa3ed25328d19f13 SHA-256: 83e723c22bbbad2709f75f4ba44e006fba321f57e25b73c895fec1b780ee8290
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=love+poem+for+my+wife+on+her+birthday In PDF document text
    • https://cdn-cms.f-static.net/uploads/4473971/normal_60550d955f577.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488558/normal_606a89b9c92c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481527/normal_606bfa651ffee.pdfIn PDF document text
    • https://cdn.sqhk.co/zopizote/DharigQ/golujawof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461481/normal_6022a86481f1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388052/normal_5fdc215a90955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_600bf0a026da4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459929/normal_6049513fc9939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502906/normal_606b869a62fd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5ff919b4da836.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/MZXih7l/tajegubibovaperubotal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457857/normal_5ff4a36018bdc.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/Ve6tehj/zombie_outbreak_response_team_tire_cover.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://s3.amazonaws.com/sajezife/after_we_collided_movie_on_netflix_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/romeo_julieta_short_churchill_review.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/31969874601.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/kikepavowamotok.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/cdot_traffic_report_i_25.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/lizex.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/application_of_nanotechnology_in_medical_field.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/teraxivogiv.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/how_to_use_technical_analysis_for_intraday_trading.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/how_to_turn_shop_vac_into_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/707554897.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/michael_pollan_food_rules_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/powapegidamoxijifog.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_off0000f520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF520 5192 bytes
SHA-256: d334388a3921ec5b13b43280d56e75c17501715700d0c0f324a0bc446e456b62
font_01_sfnt_off000106b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B2 11412 bytes
SHA-256: 46b45e8aea30fc037becf223af260cb13f7e56bd6c353cea95e77104be342c63
font_02_sfnt_off00012d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D32 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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