Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3734f5d6fd06c98…

MALICIOUS

PDF

84.6 KB Created: 2021-04-06 09:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 362eb71407f2ad7a9f3a61f66e4e6325 SHA-1: 2f3349af57b635c9d21ab4a51ce435b5f535de30 SHA-256: b3734f5d6fd06c98f24e07b2440bd9f5879f9677dfedd82d6a6eaf5c05b81a50
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an external URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://pelibifir.ru/123?utm_term=hans+zimmer+time+cello+sheet+music
    • https://vinazawodix.weebly.com/uploads/1/3/4/3/134352366/vonadovenik_vorobe_dajilewoza.pdf
    • https://static.s123-cdn-static.com/uploads/4447097/normal_5fdcdff51c042.pdf
    • https://cdn-cms.f-static.net/uploads/4366005/normal_60149db56ff81.pdf
    • https://zagefejov.weebly.com/uploads/1/3/2/7/132710748/wokagizobenun-bupiboledelijaz-bemidogibaru.pdf
    • http://sutarakikim.scienceontheweb.net/tepojosiserini.pdf
    • http://store50off.info/netflix_vr_app_download_ios1be4j.pdf
    • http://nozuwetenij.iblogger.org/bojudodu.pdf
    • https://senekidus.weebly.com/uploads/1/3/2/7/132740533/3551958.pdf
    • https://static.s123-cdn-static.com/uploads/4446914/normal_5fee7daecb75f.pdf
    • https://mafakovik.weebly.com/uploads/1/3/5/3/135347242/fa4465577.pdf
    • https://cdn-cms.f-static.net/uploads/4385028/normal_6011a5efc0d4a.pdf
    • https://kokonasaza.weebly.com/uploads/1/3/1/6/131636703/zuridobubom.pdf
    • http://trychambre.xyz/tawozivisumomixekakarhf0ws.pdf
    • http://tiwunevebir.22web.org/27788642017.pdf
    • http://liwurivosopap.medianewsonline.com/lilow.pdf
    • https://cdn-cms.f-static.net/uploads/4474746/normal_60601df688877.pdf
    • http://center-san.ru/how_do_you_find_function_value2dcap.pdf
    • http://kayikciakademi.com/how_to_clean_a_presto_electric_griddle4fo2x.pdf
    • http://wazerutumaj.22web.org/solving_quadratic_equations_all_methods_worksheet_kuta_software.pdf
    • http://spacexfoundation.net/the_100_kass_morgan_settingamzlr.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xobirixogup.epizy.com/danurapelu.pdf
    • http://dokelegusipodi.epizy.com/cisco_anyconnect_ordering_guide_2019.pdf
    • http://tulezij.rf.gd/wometofefawi.pdf
    • http://xinasewaja.epizy.com/lalusezakuv.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f550.bin
52d87e27b57c31b56ec565ddf09cba401f652aa68f46017cb9f8f74eaee3dbf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF550 5052 bytes
font_01_sfnt_off00010652.bin
218eeb024fdbee668f43fb75f7e6eddf8f361c5ca5f24e6bb0c28c0bf6e4ca82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 11916 bytes
font_02_sfnt_off00012f54.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F54 16204 bytes

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