Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa0c6dad2ad1683…

MALICIOUS

PDF

74.5 KB Created: 2021-02-17 18:37:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 879a143e441ab8798d1d18831f9c655e SHA-1: e130a0bd1ad47ed97cf7b019ca952a92084bd164 SHA-256: efa0c6dad2ad1683931fc4d8bc76d6a61779ee74def03de99b9ad589de01ff1c
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://seumenha.ru/aws?utm_term=samsung+xpress+c460w+wifi+setup PDF link annotation
    • https://cdn.sqhk.co/tikisudolo/3jBNb1n/blade_crafter_2.pdfIn PDF document text
    • https://cdn.sqhk.co/nobegasosev/AkxZgeg/league_of_berserk_mod_apk_2._306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487399/normal_601db7bdb3d9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420224/normal_6004eb88dca19.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/jhgg2if/lofinet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402246/normal_6000a032ea3f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420244/normal_600b67315207e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456705/normal_6004dc6925509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408333/normal_6021f7a76128b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393637/normal_60142ce77e423.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/tumasun/photoshop_brushes_free_deviantart.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/my_play_store_keeps_showing_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/bass_boosted_songs_free_320kbps.pdfIn PDF document text
    • http://torowenakatum.epizy.com/78285081505.pdfIn PDF document text
    • http://tumoxotakim.epizy.com/angry_birds_rio_game_music.pdfIn PDF document text
    • http://jomozaredid.rf.gd/performance_bond_and_bid_bond.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/cairbar_schutel.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_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 5948 bytes
SHA-256: 9bc9a4166bde1404fd04343ede72d3c0db1cf1e326d860b3764179de2fcd0a8e
font_01_sfnt_off0000f89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89B 10532 bytes
SHA-256: 079e390e74e0ceaa338d9d15b381601edb24711f4989f1197629493f3ec3bd5c