Malicious PDF — malware analysis report

Static analysis result for SHA-256 d323684919de902a…

MALICIOUS

PDF

78.2 KB Created: 2021-03-18 10:45:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e59fe2235a03e242f8a340b0205305 SHA-1: 8ebf035d42e4ecdf09132c99bb15db4532c39ef5 SHA-256: d323684919de902acb056fcb38d486e875e83e1fe7dfecf7e739ba4cf97e2212
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of an advance-fee scam. The document body, though heavily obfuscated, combined with the heuristic 'SE_ADVANCE_FEE_SCAM_LURE', indicates a fraudulent intent. The presence of multiple external URLs suggests attempts to redirect the user to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/award?keyword=college+algebra+word+problems+with+solutions+pdf
    • http://zipubezexupoka.mywebcommunity.org/mosawimorewezimekeselulo.pdf
    • https://cdn.sqhk.co/jedesawu/csSjdQb/44641305299.pdf
    • https://cdn-cms.f-static.net/uploads/4404520/normal_600fe6c66fc02.pdf
    • https://static.s123-cdn-static.com/uploads/4379859/normal_60052a9d75265.pdf
    • http://vipadobotisituz.mygamesonline.org/jawimof.pdf
    • https://cdn.sqhk.co/reriwoduriju/gqxjVrV/2022_olympics_place.pdf
    • http://bezorujod.iblogger.org/86412569392.pdf
    • http://tezoxefakalexo.sportsontheweb.net/55036414354.pdf
    • http://roxelejabojafe.scienceontheweb.net/jeramofurenaxiloripelove.pdf
    • https://cdn-cms.f-static.net/uploads/4479718/normal_60198070df520.pdf
    • http://govuxojikasumot.scienceontheweb.net/calcestruzzo_precompresso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nitatotol/panasonic_phones_manuals_uk.pdf
    • http://disoluje.myartsonline.com/beats_solo_pro_noise_cancelling_black_friday.pdf
    • http://zimopup.myartsonline.com/62078198521.pdf
    • http://seguwogira.rf.gd/95324232039.pdf
    • https://s3.amazonaws.com/zurovajij/hillsborough_county_water_quality_report_2016.pdf
    • https://s3.amazonaws.com/xapidajovaji/christopher_paolini_inheritance_free.pdf
    • http://pudosuvosav.atwebpages.com/89769935838.pdf
    • https://s3.amazonaws.com/zafirawit/demographic_dividend_and_development.pdf
    • http://pulawev.epizy.com/dusew.pdf
    • http://zuwarikufaz.epizy.com/greatest_love_of_all.pdf
    • https://s3.amazonaws.com/lodazojamuva/xelozawo.pdf
    • http://natunolujekusi.epizy.com/similarities_between_verbal_and_non_verbal_communication.pdf
    • http://gixarewujedel.atwebpages.com/pl_sql_tutorial.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edbb.bin
a3b6bad9933df1f8ee0ab903dc6bfc7e40f62437b1865b84c368bfa48b8858c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBB 5592 bytes
font_01_sfnt_off000100a0.bin
cbd96032d0b0daaac40014ae28783035c6dee2d2329abca795c1eef079fe85c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A0 11836 bytes

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