Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc98f885423d1c1…

MALICIOUS

PDF

76.4 KB Created: 2021-03-14 13:00:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c96ca0887c256210e237eb70ff2a1b4a SHA-1: 1c2c2d0e559f6a9b329e375a79861a094e967171 SHA-256: 3cc98f885423d1c1e92585ecee4c99eb8a00751e714458a88a7a30d177f30cf3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a printable calendar.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/award?keyword=jan+2020+calendar+printable+pdf PDF link annotation
    • https://cdn.sqhk.co/wojipezusax/i706REi/11411297289.pdfIn PDF document text
    • https://cdn.sqhk.co/bipaneri/dv0hg7b/71698567791.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/ihfjjfE/clearance_swing_sets_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/naxusepimosa/hbZIieZ/ba_dum_tss_meme_significado.pdfIn PDF document text
    • https://cdn.sqhk.co/xumupojamax/fHwAcjc/bad_granny_chapter_2_online_free_game_play.pdfIn PDF document text
    • https://cdn.sqhk.co/pujixefan/ipbihm0/bixonizejusimab.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/kjcVihx/90727273297.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/9X98hfg/baking_cupcakes_cooking_game_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/foxoxaze/0daR2hd/xazadefawoxupaduwotupovo.pdfIn PDF document text
    • http://susekilimu.medianewsonline.com/catalogo_jequiti_2020_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xovikojux/pysgeha/kofilarekunokore.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/bae9103a-38a1-4436-9b08-67376583448c/how_to_crochet_hair_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/bupopulaxudila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ee2ecc6-24c0-4182-aeb5-c9d8efbe10be/what_do_you_understand_by_the_word_self-reliance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70472ab6-fe82-46bb-96c4-bcf297cd3216/maya_banks_rush_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/lots_of_a_lot_of_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/88934823640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe800e7-d0fb-4f1b-9347-8ec1373bbfa0/kemper_profiling_amp_vs_powerhead.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/jegagitiruguzel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66f841e9-7e91-423d-b9b5-18672dca652d/price_for_stihl_ms250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab853c2-2d58-446c-a9d0-d1382896e35a/niferokenowig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaaf4b3f-6f1a-404e-b633-15424e25addb/binufido.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/budose.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_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 5376 bytes
SHA-256: d56ce265633f00838a752ca0d4080a4fd7ad139b4eac139f43b5147087d6db94
font_01_sfnt_off0000ff0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0D 10860 bytes
SHA-256: 44777bcb8ea981941809d5e7555fc8e8e524f34ad03d444f62e3124cb842431f

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