Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c63ad910f8830ce…

MALICIOUS

PDF

78.1 KB Created: 2021-03-10 23:28:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe9fc40e1a0486400d85445b3c23494d SHA-1: b93fbabb49764b28ba5edb8840164890d0aaec5c SHA-256: 3c63ad910f8830cebe5bfadf192b051268f9fcb7fd3381636f9154f542fa5788
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The document body, though heavily obfuscated, contains references to 'busybox pro 9. 6. 5 apk free' and 'wkhtmltopdf', suggesting a potential lure related to software or a technical pretext. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick the user into a fraudulent transaction, likely involving a fake prize or parcel delivery. The external URI `https://resalured.ru/123?utm_term=busybox+pro+9.+6.+5+apk+free` is a key indicator of a malicious external connection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/123?utm_term=busybox+pro+9.+6.+5+apk+free
    • https://cdn.sqhk.co/wotinobeb/j0idhea/mamokotofifafiwikejilivi.pdf
    • https://cdn-cms.f-static.net/uploads/4426814/normal_6041cc7e7cce1.pdf
    • https://cdn.sqhk.co/guxifunuris/cQV26jd/28692271254.pdf
    • https://cdn.sqhk.co/savageven/jagdgj5/mujezinunogagewitesik.pdf
    • https://cdn.sqhk.co/xagaxubibiz/hcjLGsI/mud_bogging_song.pdf
    • http://witikotuxigere.scienceontheweb.net/lilami.pdf
    • http://pazolozul.mypressonline.com/lobevavutipufuze.pdf
    • http://desajegurake.scienceontheweb.net/when_to_perform_causal_analysis.pdf
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5fd149d1f39e0.pdf
    • http://vekisonoloze.sportsontheweb.net/ronokokanurexe.pdf
    • https://static.s123-cdn-static.com/uploads/4501383/normal_5ffbacc65e998.pdf
    • http://meroxisawifagu.mygamesonline.org/4.03_judicial_opinion_template.pdf
    • https://cdn.sqhk.co/xibetevoxaj/difq690/republic_of_china_simulator_2017.pdf
    • http://fupemagis.mywebcommunity.org/husqvarna_240_carburetor_removal.pdf
    • https://static.s123-cdn-static.com/uploads/4528876/normal_5fd091db8031b.pdf
    • https://cdn.sqhk.co/bujasugawo/Gjijdgg/mahapariksha_portal_question_paper_book.pdf
    • https://cdn.sqhk.co/datawafag/eghn6gf/katibiziv.pdf
    • http://fukuzowi.sportsontheweb.net/agus_mustofa_ternyata_akhirat_tidak_kekal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jotizifime/10876702553.pdf
    • http://kutoxinupuroxo.onlinewebshop.net/37396888931.pdf
    • http://wegugoleta.onlinewebshop.net/sipomikoxolupo.pdf
    • https://s3.amazonaws.com/jefobexapulow/kigifavubojekazol.pdf
    • https://s3.amazonaws.com/tiluwisulepam/literal_versus_figurative_language_worksheet.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_off0000f0e6.bin
79e234ad04c986d19b697facd5ee7bfc6090db8bf934c0b8381326b6e0e7d311		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E6 5752 bytes
font_01_sfnt_off0001049e.bin
517dc7f14e6f0a3e7f5675f19c4e554581886cce6c3bd0bc9bf7836b7ad111e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1049E 11176 bytes

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