Malicious PDF — malware analysis report

Static analysis result for SHA-256 00908c7bf1adc967…

MALICIOUS

PDF

80.4 KB Created: 2021-03-05 20:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06373cad9cede2557d958ca2dca24ce6 SHA-1: 1c876dc84599f0067a06f4f11413d341691a9e18 SHA-256: 00908c7bf1adc967a40ac5e6d2896bf823769621b8a568d369bee89a930983bc
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a secondary payload or lead the user to a phishing site. The document body, though heavily obfuscated, appears to reference a product, suggesting a lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/strik?utm_term=xbox+one+wired+controller+replacement+cable
    • https://cdn-cms.f-static.net/uploads/4379736/normal_60296f6386ae3.pdf
    • http://50offshop.info/51446898404mz9q7.pdf
    • http://yildirimotobursa.com/457641282961xdwh.pdf
    • https://cdn.sqhk.co/dufubimaru/KbhdjaA/assistive_touch_2020_uptodown.pdf
    • https://cdn-cms.f-static.net/uploads/4447878/normal_6039482eeeb7f.pdf
    • https://cdn.sqhk.co/lorotukogof/hfjcTji/jexitimaravupuvalen.pdf
    • http://thepropheticapp.com/jekizenef95row.pdf
    • https://cdn.sqhk.co/keridola/hiiiSKo/nipemu.pdf
    • https://static.s123-cdn-static.com/uploads/4454179/normal_5fff310222e15.pdf
    • https://cdn.sqhk.co/ributexovek/hibhipG/world_building_craft_mod_apk.pdf
    • http://hs-life.ru/82279965561xfjcf.pdf
    • https://cdn-cms.f-static.net/uploads/4404528/normal_6030ec9496607.pdf
    • https://cdn-cms.f-static.net/uploads/4486994/normal_60313be85e1c9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jixerubowi/cctv_full_form_wikipedia.pdf
    • https://uploads.strikinglycdn.com/files/0fe5722a-0761-4f1b-a063-964cfeafabf1/speakeasy_las_vegas_2019.pdf
    • https://s3.amazonaws.com/sojaxub/aws_landing_zone_user_guide.pdf
    • https://uploads.strikinglycdn.com/files/5a86e375-593e-4249-91a1-e6ba35d2a724/51214824213.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/voice_of_america_pronunciation_guide.pdf
    • https://uploads.strikinglycdn.com/files/23fa429d-8e2e-4f3b-91a2-cee304fb3f6e/dexiginegekatiwilaxamodu.pdf
    • https://s3.amazonaws.com/bededuxotulapil/faxupub.pdf
    • https://s3.amazonaws.com/wukara/kill_bill_whistle_full_song.pdf
    • https://uploads.strikinglycdn.com/files/b2faeeff-701c-4d7a-9083-b4f99f54957a/demostrar_identidades_trigonometricas_ejercicios.pdf
    • https://uploads.strikinglycdn.com/files/5b6d4ce9-9a25-45a6-b468-d553f86a7ade/9000_watt_predator_generator_reviews.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f07f.bin
887099bafe9f26eab0adf3a03396c0289d832d1802143a4d187fcb74d788e0b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF07F 5108 bytes
font_01_sfnt_off000101be.bin
f4e48f057789915a1062d8c25197553f932407c259492191342092a2beeca224		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101BE 10596 bytes
font_02_sfnt_off0001257c.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1257C 4324 bytes

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