Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cfd7cee5abcbf03…

MALICIOUS

PDF

82.0 KB Created: 2021-03-24 04:58:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25614734834a483629a3f93a49efda2a SHA-1: 9ec84e41bbc6dae62ee33a440394ea622078ff7f SHA-256: 0cfd7cee5abcbf03b77b3d80a7473e64b4d931ac2e1e841b2f578133c7d25f7a
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL that appears to be a lure, disguised with text related to a "small engine repair course youtube". While no scripts were explicitly extracted, the presence of embedded URLs and the ML/ClamAV detections suggest it may leverage PDF vulnerabilities or JavaScript to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/strik?utm_term=small+engine+repair+course+youtube
    • http://ecoterritory.store/repair_authorization_form_templatefkg7p.pdf
    • https://jakinazar.weebly.com/uploads/1/3/1/0/131070367/97d78fba103.pdf
    • http://zebrait.fun/28014818086ke7eh.pdf
    • https://devegiwosoti.weebly.com/uploads/1/3/4/5/134592662/d3e84.pdf
    • http://kulotufiw.mypressonline.com/estuary_ecosystem.pdf
    • https://kosodakugup.weebly.com/uploads/1/3/4/6/134655388/2769486.pdf
    • http://ibkreactiva2020.com/logical_reasoning_questions_for_clatfhbzf.pdf
    • http://dusosax.66ghz.com/contractor_payment_terms_template.pdf
    • https://ramageputa.weebly.com/uploads/1/3/1/6/131637054/likisi_jugilutolir_rexojewoxeboxoz_biwemoropelij.pdf
    • https://xugeguva.weebly.com/uploads/1/3/1/4/131438310/9281291.pdf
    • http://segway-wheelchair.ru/troy_bilt_tb110_idle_adjustment734ot.pdf
    • http://supobesopo.mygamesonline.org/5760879429.pdf
    • http://joriwolujuf.sportsontheweb.net/19446518428.pdf
    • http://vinnipoh.fun/how_much_oil_in_bad_boy_mowererk2w.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://povokufav.epizy.com/flowers_for_algernon_questions.pdf
    • http://nibemodida.myartsonline.com/cardiac_arrest_treatment.pdf
    • http://miwafugupek.epizy.com/31317964906.pdf
    • http://fifowubijevajiz.epizy.com/62706441893.pdf
    • http://todiwefexoneb.atwebpages.com/59578636202.pdf
    • http://sijelufuzarolup.epizy.com/jajomejefar.pdf
    • http://sozidasagekixur.epizy.com/excel_bedingte_formatierung_bestimmter_text_mit_inhalt.pdf
    • http://pakatikik.epizy.com/bostitch_f28ww_trigger_valve_kit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5b2.bin
dbb2d93bb4bef17e68e0e87c48d1969a8be1ec0a728441f190b5330c68fdf775		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B2 5480 bytes
font_01_sfnt_off00010831.bin
97a416e2002828b4b2bfca19cac4c8dbedae78c535eb479597230b0666c8c766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10831 10424 bytes
font_02_sfnt_off00012be2.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE2 4324 bytes

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