Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41b0372846fa7f7…

MALICIOUS

PDF

75.9 KB Created: 2021-03-17 02:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cfa078e900c22fe70e3dc29ae2f67ab SHA-1: 93bd6b66f77b75c0cea1fc3efdd02bdc5202c11b SHA-256: d41b0372846fa7f7f9be1a0e877dda04e43df2fe26fcb7eaaad59122fac8b7bd
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of an embedded URI pointing to 'druttle.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' further supports the phishing pretext, indicating the document likely contains urgent language to prompt user interaction with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/wix?keyword=gunstock+promo+code+2020
    • http://pexawegowe.mywebcommunity.org/biozone_ib_biology_second_edition_answers.pdf
    • https://cdn.sqhk.co/sojowidaz/bKjdifz/voltage_drop_formula_for_cable_sizing.pdf
    • https://cdn.sqhk.co/pofevadamem/jVe7hgc/bubble_trouble_1.pdf
    • https://cdn.sqhk.co/bijozugetav/giihgcz/soul_ark_new_world_apk.pdf
    • http://jenuxijaf.mygamesonline.org/acquired_prothrombin_complex_deficiency.pdf
    • https://cdn.sqhk.co/kibutonap/FBjmegg/rifipofugurinol.pdf
    • http://ninotekega.mygamesonline.org/map_of_the_world_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ede36962-9452-4451-b182-fa4236ba9bc6.filesusr.com/ugd/83b1b3_69cf30a6d30046c29fe2f7588fe0b432.pdf?index=true
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_a1febc55cba1498485d220f443fa227a.pdf?index=true
    • https://s3.amazonaws.com/xomudufe/how_would_you_describe_forrest_gump.pdf
    • https://s3.amazonaws.com/jemisajoda/zutil.pdf
    • http://pusapovewazigu.onlinewebshop.net/how_much_is_a_box_of_romeo_and_juliet_cigars.pdf
    • https://s3.amazonaws.com/mubemutolewe/40820018357.pdf
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_73d9d00361e34d739917e9f8a02dfc99.pdf?index=true
    • https://f200304d-316b-45a9-b05c-680123ec6d1a.filesusr.com/ugd/aad1a2_639eaa9aebb14f19bd324e08fcb4bca2.pdf?index=true
    • https://d62ff7d9-aefc-4ab8-8cdf-af38868aea16.filesusr.com/ugd/54b9a1_7b33faed01d1409eadfe2d0fa4f6bcb4.pdf?index=true
    • https://02314edc-d025-420b-9d62-795437f25c47.filesusr.com/ugd/4f0fc1_a5916e8a28ab453f8504fca1910cdb72.pdf?index=true
    • https://s3.amazonaws.com/sudevejerifu/38902664103.pdf
    • https://s3.amazonaws.com/gudukupir/astro_universe_free.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_off0000e958.bin
b79378f1eab8bd1895177ea2242a85d493e160a4a4dd3618a241df667b8a0f45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE958 5344 bytes
font_01_sfnt_off0000fb80.bin
253b828f33baf06749ec0d8bb8432588e1e34001d11911b9ecf1310d498df882		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 10976 bytes

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