Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f44daecfadfdfe6…

MALICIOUS

PDF

77.4 KB Created: 2021-03-13 21:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 78fcb4b9a1ecfc55ffc38fa6c964a807 SHA-1: a0e47063cd1aa1bf1224af05ed17aa8dcc9eaf4c SHA-256: 1f44daecfadfdfe66238a9d679500886e9c161260a122b563f037cde1130d2f7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL associated with purchasing illegal substances, which is a common lure in phishing campaigns. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://bologen.ru/wix?keyword=buy+clenbuterol+tablets PDF link annotation
    • http://losinglotterynumbers.com/dalizurifoxuxetevorogu39mwi.pdfIn PDF document text
    • http://forecast.bet/way_back_into_love_piano_sheet_musicfjuyj.pdfIn PDF document text
    • http://circulshtangcalip.website/ucl_dclinpsy_case_report_guidelines1ve2s.pdfIn PDF document text
    • http://realwockyc.info/epson_nx230_print_head_alignment4hw5v.pdfIn PDF document text
    • http://italiahot.space/veryfitpro_id115_plus_hr_manual30ofs.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/wall_street_journal_subscription_uk70u6h.pdfIn PDF document text
    • http://flipping-car.online/is_the_irish_times_printed_todayqbpcp.pdfIn PDF document text
    • http://mmmmmme.space/why_are_ice_sheets_melting7y5fk.pdfIn PDF document text
    • http://disconto50.info/meturixakisujeze1fspx.pdfIn PDF document text
    • http://fumigatoff.online/aldi_store_manager_uniform233ur.pdfIn PDF document text
    • http://supernefritroller.xyz/18932181995eslum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e338289-4d28-4b62-951c-90bbb75e374d/osha_construction_10_hour_safety_training_card.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/6700360864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9bbd872-c878-4c0e-b729-9545f8d3292c/manly_p_hall_youtube_alchemy.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/cooler_master_cm_storm_trooper_se.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df0fa09e-3dbd-4c6f-beaf-49dd7c57f4d2/sapomev.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/56022081604.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/flute_flight_of_the_bumblebee_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76feaebf-f6b5-4531-b419-8c93c7c601fe/gipavivinavapiletaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/html_form_input_type_email.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/accident_report_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/61066437141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1809e5f-6fd5-4313-ad14-c1e108fc5445/pazabinutawigozu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF293 5084 bytes
SHA-256: 853800ae058f06d6f4d7cee25abd4475286c4c25ab263a9b5a4f17aa8a4c1b54
font_01_sfnt_off000103ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103EF 10688 bytes
SHA-256: 257e280e91cd60335ff2d41e7761575e3c0aead62666552d1241d2b0a562a3ef

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