Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3113a63eda36c19…

MALICIOUS

PDF

74.9 KB Created: 2021-03-01 19:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f7d63ab206e295804a3e8977d6ca418d SHA-1: 302524329af27d7ecedb06481cadb329c3cd2833 SHA-256: d3113a63eda36c19ad7f042fb02ebdc3943a11b9b539eb6cf6dc43d3a80ad8cc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to a manual, which is a common tactic for phishing or malware distribution. The presence of multiple embedded URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/award?keyword=eureka+whirlwind+lite+4388+manual PDF link annotation
    • http://bosemefawixuwov.mypressonline.com/34166673672.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366009/normal_6005da1335d6c.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/0hghgjg/guwef.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/rgb_color_chart_sublimation.pdfIn PDF document text
    • https://cdn.sqhk.co/sexifirume/h6jfQ1l/jifenapu.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/can_i_read_transliteration_of_quran.pdfIn PDF document text
    • http://nizalanus.22web.org/qualified_audit_report_adverse_opinion.pdfIn PDF document text
    • http://toteganutiv.66ghz.com/83789210944.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374380/normal_6003ebf4a8a96.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/sword_art_online_season_3_list_of_episodes.pdfIn PDF document text
    • https://cdn.sqhk.co/mikitikotak/fEWgjUX/43659172978.pdfIn PDF document text
    • http://vengriya.space/makita_plunge_saw_guide_rail_rubberds0hc.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/28Hjrjz/xakuvuxifamazifut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://papipafikumi.epizy.com/fifty_shades_trilogy_movie_set.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/soundhound_spotify_android.pdfIn PDF document text
    • http://guvekes.rf.gd/thinking_maps_bridge_map_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/miviletipemu.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/jekotozazisobiz.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/67940959016.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/application_security_policy.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_off0000dd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD56 5444 bytes
SHA-256: eb6592aa3f6c666a2f35562ee029fb31d2368febfa10ed7cd1d1c0a18b45d1a1
font_01_sfnt_off0000efd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD2 15084 bytes
SHA-256: 2b770f00dd04fe19a65c225b45c8aa2b633e968ee3ac2eefe34ab67b98d422a9

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