Malicious PDF — malware analysis report

Static analysis result for SHA-256 080001e0ce667d17…

MALICIOUS

PDF

81.7 KB Created: 2021-04-01 20:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b9904d2c44a433aef4e29babb92ba00b SHA-1: d59a81d0bb4d7eaf6250f026fdeb097cea699d97 SHA-256: 080001e0ce667d176a7a7c1494a80551f29dbb258992faaca6aa1c79287aae17
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The document body is heavily obfuscated, but the presence of numerous external URIs indicates an attempt to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/wix?keyword=watsons+go+to+birmingham+chapter+questions PDF link annotation
    • http://megaparegeduze.iblogger.org/boney_m_english_songs_free.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/xalad-gufamo-lokagaroratezi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_604a97454b3a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455183/normal_5fe3b38744f1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_60356fff2713d.pdfIn PDF document text
    • https://zafitageleg.weebly.com/uploads/1/3/4/4/134489703/a16149d36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_60095b2d17232.pdfIn PDF document text
    • https://kinurilidere.weebly.com/uploads/1/3/1/3/131379896/67060db6dd3c122.pdfIn PDF document text
    • https://nuvaxavixo.weebly.com/uploads/1/3/0/7/130738964/solezopusus_dobulizika_nurokufaveposof_firenilisig.pdfIn PDF document text
    • https://zemezomar.weebly.com/uploads/1/3/4/7/134711889/21667f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413848/normal_604f9540d013a.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/jixeremipet/carry_on_bags_for_sale_near_me.pdfIn PDF document text
    • http://beruleruz.rf.gd/viwisurodiduloteg.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/always_on_display_apk_huawei.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80931fa7-676f-436f-be82-d76431794fc4/the_giver_study_guide_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ced0847d-c3fa-43f4-81f1-05739901619e/757156826.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/schumacher_battery_charger_xc10_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac40e53b-d4f4-4a4f-8cb9-db520135ba51/what_is_lean_in_healthcare.pdfIn PDF document text
    • http://fovuwikotunepam.rf.gd/80190617532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e367f0b-384a-48ef-aa19-dd98996a5373/37347719518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bd0da26-18b0-4ee7-b238-6b1ec19c7bd7/how_to_write_a_personal_development_goal_for_work.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_off00010032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10032 5596 bytes
SHA-256: 5398469d3f709ac4dcff6a5ea06eae41ab58874c3fc96bc2c9b020236dd5fb4d
font_01_sfnt_off0001131b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1131B 11276 bytes
SHA-256: be594e9526221958c166c1fc706691dac7ad3d64e7ddb1819a2fc04e1aaf424b

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