Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c061d67a57d2d8…

MALICIOUS

PDF

76.7 KB Created: 2021-03-10 19:39:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 10235904f55e981f6cc2aceaad2a833e SHA-1: c26f320c168b2c8341a64637e0d7afd10ae2cb82 SHA-256: f6c061d67a57d2d8b8029eade6ed64cc4c954b4a4947c358bc800fce69b73108
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to serve a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to educational materials, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/wix?keyword=inequality+review+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/zegofurop/3gfxeic/drone_vs_fpv_for_dji_drones.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459921/normal_5fe4ac0274d60.pdfIn PDF document text
    • http://vikiduxa.mywebcommunity.org/89326402548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418786/normal_5fe46cf56fc12.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/icjgjdz/85843305927.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470972/normal_5ff8d40325fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394072/normal_60394eafbc738.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377704/normal_5fc82859b7ce8.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/jjUrUqq/download_video_tv_sideview_remote.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374373/normal_5ffe4cc025447.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428061/normal_600b6c8fe3fa5.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/how_to_lose_thigh_fat_with_resistance_bands.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391907/normal_604680e64a01c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5fe8a38f14c19.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/61102762199.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://60f6da8c-824c-4163-aae9-6195f2ac7ed4.filesusr.com/ugd/7f16bd_505337cd63814d1fba4bd8525f6f9fd4.pdf?index=trueIn PDF document text
    • https://6c8ebe11-725c-420b-823a-68bc39d02ad2.filesusr.com/ugd/3e87bf_9c56f18e07484016a9be3d07b8fe7628.pdf?index=trueIn PDF document text
    • https://65d0a56f-4074-4e8f-9acc-29e6f8e8f663.filesusr.com/ugd/37655d_eb43b8c2d9dc4403b8ef7c368e20d443.pdf?index=trueIn PDF document text
    • http://kigokigaruv.myartsonline.com/what_is_zone_3_bathroom.pdfIn PDF document text
    • http://jomupaz.myartsonline.com/jifevana.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/how_to_do_a_land_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/attention_charlie_puth_sheet_music_piano.pdfIn PDF document text
    • https://3d3b31fc-6152-41c7-b1d4-a4af3afcce63.filesusr.com/ugd/3f8d85_e4b3c1dc4112422abd5fc1c069d876aa.pdf?index=trueIn PDF document text
    • https://780c8f77-0f51-49ab-8dd1-60a90eb210a4.filesusr.com/ugd/1b8612_1b92c410de4e4e5f9e77b4b953e7a7c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/irving_janis_groupthink_8_symptoms.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_off0000f00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00F 5156 bytes
SHA-256: e1658038207cd3ffb266153ec7ccca4f4864cd71b60c9fbd1483a00edb9bc0d9
font_01_sfnt_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 10236 bytes
SHA-256: d4e36979213aca981b43dfe184697f770c20a32f02bf9eded97fa93e76b196ee

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