Malicious PDF — malware analysis report

Static analysis result for SHA-256 6001254dca529bab…

MALICIOUS

PDF

68.5 KB Created: 2021-03-24 14:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8b2b20604ec4cd7de9bfc726c23327a3 SHA-1: 81154433c58f75c6475ed61d1a4ad08cdc9b5693 SHA-256: 6001254dca529babc30acaf06a6310cfa02ed71048d3955733c010e8aab5887a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'mezovuduw.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, suggests a lure related to 'algebraic manipulation worksheet answers', aligning with a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=algebraic+manipulation+worksheet+answers PDF link annotation
    • http://gugaferur.22web.org/informant_5_vs_google_calendar.pdfIn PDF document text
    • http://lirelejavebot.iblogger.org/42009775028.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/dfnYdhe/5040903244.pdfIn PDF document text
    • http://latuha.com/best_converter_for_appleir4po.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/jahbhje/bubble_fish_lamp_fish_floating.pdfIn PDF document text
    • http://5dradio.ru/what_is_the_bolt_action_rifle_in_rdr2xr5l9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ffcfc74-12ca-4976-83f6-77117f1c0355/86360968758.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9cfa57a-65ac-425e-89f6-797d386742df/ropivebeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77fdeba-1fee-43fc-b239-84743e72565a/ssr_125_pit_bike_for_sale_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10e31a3-4399-4160-9dfe-36ae8035fa40/voxelabo.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/android_bundle_size_limit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d86e607b-c553-4f05-a2fd-29d700117501/does_anyone_take_expired_car_seats.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/vidijasedenolipozelevidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84700bbd-0b36-4110-958b-73c105345b4b/how_to_do_oll_j_perm.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/how_to_get_adobe_premiere_pro_for_free.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_off0000cbe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE4 5632 bytes
SHA-256: 24f3ffd09f80d8e3618549764883792c7455999ee41d0047d21e4a9ddfb61f14
font_01_sfnt_off0000def4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF4 11132 bytes
SHA-256: eff1b93a6c29d3c33ad015192cba59d790bd0c8bdac9b233257be9fb27694d35

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