Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c94e944de3d363a…

MALICIOUS

PDF

84.5 KB Created: 2021-03-17 01:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 437f059442b88393ded8a16a3e646a8c SHA-1: def09751555ad0c6ccbe4fd99c875db5aa8401a0 SHA-256: 4c94e944de3d363afdd2dfb10dca64b2af72655c165c70f0820478bea46cd380
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or scam attempt. The document body, though heavily obfuscated, suggests a lure related to a search query, further supporting a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://maypoin.ru/strik?utm_term=does+roomba+learn+the+floor+plan PDF link annotation
    • https://cdn.sqhk.co/mafulavet/ghagjhe/time_password_screen_lock_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kevovevude/gjjaYhe/biguvob.pdfIn PDF document text
    • https://cdn.sqhk.co/kiraxozi/ighgcDx/zuzavitavedubugu.pdfIn PDF document text
    • https://cdn.sqhk.co/janurisu/JNicNTN/vortex_cloud_gaming_download_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gasupewu/5jd8Gii/facebook_lite_vs_facebook.pdfIn PDF document text
    • http://leree6.club/ley_de_ohm_formula_potenciagxk6y.pdfIn PDF document text
    • https://cdn.sqhk.co/gurudulep/jgOibjf/luxeg.pdfIn PDF document text
    • https://cdn.sqhk.co/subesanodag/gjOhege/word_puzzle_games_with_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/fUiahc1/ultimate_guitar_tuner_free_ukulele_and_guitar_tuner.pdfIn PDF document text
    • http://nnorm-id.com/buzesotewokodojovulaxzlz5w.pdfIn PDF document text
    • http://rm-swis-mine.com/mabenuxawalafig9bsy2.pdfIn PDF document text
    • https://cdn.sqhk.co/giripiponi/aVjfjiX/46288995794.pdfIn PDF document text
    • https://cdn.sqhk.co/ligazupevu/ibD4ien/89138068622.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/fejfjfL/92726614696.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/c._v._o_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/how_to_change_batteries_in_ingenuity_swing.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/ethical_guidelines_for_making_business_decisions.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/what_kind_of_oil_does_a_powermate_generator_take.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/10982129796.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/ap_human_geography_unit_11_vocab.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/ldpe_sheet_manufacturing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/64345000240.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/7135302591.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_off00010f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F10 5280 bytes
SHA-256: 774f0eb518dd42491fa4e69529c2b0686049a6d967b1b1fb43237d5251391264
font_01_sfnt_off000120d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120D2 10544 bytes
SHA-256: 87b7ea55e5b673995c7f2fa6357a4cef53d0b3dab437724b454d00f9a8a4b2ef

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