Malicious PDF — malware analysis report

Static analysis result for SHA-256 747bdad1359e583d…

MALICIOUS

PDF

83.5 KB Created: 2021-03-05 21:26:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 3ab5c6048aef1735eaa5d99231540383 SHA-1: 2a2d0a1f9bf4b1cfda37261b962f73222b5078a8 SHA-256: 747bdad1359e583da94b51afdae1a7e60e62ac99817ceb47730570cbd3285ddd
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded URLs that redirect to external resources, suggesting a phishing or credential harvesting attempt disguised as a tutorial or manual. No scripts were extracted, but the presence of external URIs points to a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=python+tutorial+pdf+2020 PDF link annotation
    • http://nemagufi.mywebcommunity.org/canon_mx300_printer_ink.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/77971639301.pdfIn PDF document text
    • http://wibifowomotab.iblogger.org/furawulogosimofiron.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413578/normal_5ff57ca1e350c.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/computer_wont_turn_on_but_power_button_lights_up.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/25597781974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446036/normal_5fd0fdf76b709.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/5706496809.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/zuniw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tapelu/lunelepuker.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/86109081693.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/66586787029.pdfIn PDF document text
    • http://zogadawedalifap.onlinewebshop.net/how_to_calculate_molar_mass_of_a_compound.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/samsung_c460_printer_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/litikiperimiwabutojazife.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/best_android_tv_box_minix.pdfIn PDF document text
    • http://wukosinigi.epizy.com/38280098628.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/topipupapusevomupelebiv.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 5328 bytes
SHA-256: c68c1b7f5159bb822640be360921e3d16123f4b185ff084573ed7ec1fc08c872
font_01_sfnt_off00011cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB5 10552 bytes
SHA-256: 5fe7922d3f1ddb4764e921dbca41b12c42a2b6c80d123f0fb66164b13e963c81

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