Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a2b52b3535c80c…

MALICIOUS

PDF

71.5 KB Created: 2021-02-14 03:02:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 342a55ee122e3b2251d0e0cb80a65aea SHA-1: ec3087d9e5584ad08c992f2d03f45e876963df2d SHA-256: b0a2b52b3535c80c4470ec188e0c3c3a5cd7092ae2b5b9378aa1ea4a58f65950
136 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely contains instructions to open a password-protected archive, a common technique to bypass gateway security. The embedded URL 'https://druttle.ru/wb?keyword=i%20like%20me%20better%20remix%20ringtone' is a strong indicator of malicious intent, likely serving as a download or redirection point for further malicious activity.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/wb?keyword=i%20like%20me%20better%20remix%20ringtone PDF link annotation
    • http://centerbluebadge.com/wegikatamovoteberubuwik6xi5n.pdfIn PDF document text
    • http://invitesistem.ru/directions_worksheetjqw20.pdfIn PDF document text
    • https://varowuzogan.weebly.com/uploads/1/3/1/8/131856285/83b68864811d.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/cuh0J6x/golixubifeburanaxa.pdfIn PDF document text
    • http://norudumof.22web.org/dibedamuwopapipiwo.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/josorefoxizope.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/lhdhfge/navubexoj.pdfIn PDF document text
    • https://dudisavaw.weebly.com/uploads/1/3/1/3/131380109/09c6de085f.pdfIn PDF document text
    • https://xidifapub.weebly.com/uploads/1/3/0/8/130873728/eee6bbb0c6211.pdfIn PDF document text
    • https://wozaxopuvomu.weebly.com/uploads/1/3/0/7/130740129/4054963.pdfIn PDF document text
    • http://lastasked.com/lactate_threshold_garmin_guided_testjgqn8.pdfIn PDF document text
    • https://cdn.sqhk.co/xikotoxerov/jheggrS/how_to_cut_sound_clips_in_garageband.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://rolozaj.epizy.com/ullathai_allitha_padam_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/35854495741.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/40918773114.pdfIn PDF document text
    • http://xoxigibutu.epizy.com/firefox_for_mac_10._5._8.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/cheap_thrills_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/coplanar_waveguide_transmission_line_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/d_t_c_p_full_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF2 4612 bytes
SHA-256: 3f29f820f5ee8f7a40b780700ab0d5da2f19a910e7b96e846295872dcf77a4bb
font_01_sfnt_off0000de7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7F 10596 bytes
SHA-256: c6ab0bd7ecb3b516542aff7b65e8106beb0ef04de4814bf40b203ef9a913fb00
font_02_sfnt_off0001029d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1029D 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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