Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bc61dfcc39d9e9…

MALICIOUS

PDF

78.8 KB Created: 2021-04-24 05:09:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 26a427047c82a5d52ba46e25c31062c0 SHA-1: 4312b0fbcd6141747519795ac1528629a27c1451 SHA-256: 89bc61dfcc39d9e9fc8bf85df5ccff82f8d2db8622bbdb19e943e9f6bf029a6d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into clicking it. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of external URIs suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/strik?utm_term=how+much+is+aston+dbx PDF link annotation
    • http://leoidet.xyz/how_to_draw_a_face_anime_girly9l7t.pdfIn PDF document text
    • http://kezijumedet.mypressonline.com/strategic_management_notes.pdfIn PDF document text
    • http://good-production9.site/lopaxetiguzerabewosyiy6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444104/normal_6015b8ded8955.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409801/normal_6005f6df44dc3.pdfIn PDF document text
    • http://tetalote.22web.org/how_to_do_mixing_colours.pdfIn PDF document text
    • http://fetedeju.mygamesonline.org/modern_high_end_valve_amplifiers.pdfIn PDF document text
    • http://balifruit.com/giwefiwuvigfx9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448733/normal_604f7657949bf.pdfIn PDF document text
    • http://bafakuvim.sportsontheweb.net/after_libro_2_google_drive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomedejufe.rf.gd/zutajitaselupavefupi.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/guideposts_prayer_chain.pdfIn PDF document text
    • http://bubizimus.epizy.com/passion_and_purity.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/ahimsa_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/kavilafaziji.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/diablo_3_modded_save_xbox_360.pdfIn PDF document text
    • http://tunowik.epizy.com/tloz_ocarina_of_time_rom_espaol_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/cell_organelle_chart.pdfIn PDF document text
    • http://zonatitusajobo.onlinewebshop.net/zinapogoda.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/crossfire_series_books_in_order.pdfIn PDF document text
    • http://kiwusumusi.rf.gd/icc_es_report_eifs.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/beduwegorimesimopepu.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_off0000f239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF239 5312 bytes
SHA-256: 04022e3409b2c39d725202b540f59901e594b6f717dae0e2801e1eb23648341d
font_01_sfnt_off00010434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10434 12624 bytes
SHA-256: bcb0f66b7a6b5e8a65bfe59d1a49557bc5b3246be159423faa7e8163a4537012

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