Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e587826bc2072ec…

MALICIOUS

PDF

72.1 KB Created: 2021-03-06 05:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: da5c99407d7b9bad7a60aa3f3a4589ac SHA-1: bbf6b43af23ffd601e07975cb3745706c7eca832 SHA-256: 6e587826bc2072ec20f49da00dbc0c6bafacc155828b6ac29c1f30123c0dca3d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://soxebez.ru/award?keyword=lg+ductless+split+system+tech+support PDF link annotation
    • http://shoop-fk.ru/best_sleep_sounds_app_freesfuz3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_600a3f6ea0722.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384145/normal_5ff8acf854be6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_6025aaeb8fc2a.pdfIn PDF document text
    • http://ductsunlimitedins.com/gudamupasuwuzuponidy25ld.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480423/normal_5fcb5231f0a66.pdfIn PDF document text
    • http://maykistore.ru/what_should_a_receptionist_say_when_answering_the_phone24p3x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390643/normal_600982786db3c.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/1da89b12-63a0-4491-ac7c-d227b20815db/how_does_the_secret_dare_to_dream_end.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b628bfe-d181-48a6-84b4-3fa1d4767541/expert_c_programming_deep_c_secrets_by_van_der_linden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d2c3a0-edae-4788-8aac-0b1e886f1e02/fitifixesuropoturarap.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/zepidamiwufafop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/490e10e4-c90e-4931-a662-34e0b8718e85/46991625124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9099a0d-d504-49e6-a59c-53a09b849303/zusewolojatuj.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/free_30th_birthday_invitation_templates_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/ohms_law_practice_problems_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/19815504255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85d5ee17-d12e-4fe1-9686-79b8b1008cd9/what_is_base_rate_neglect_in_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/80120483958.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/38022451409.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_off0000dd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD84 5320 bytes
SHA-256: f2164c61cb0f490f773c3730fc7ae3a114b46a9b8ab08a705b924d7f98ce4c36
font_01_sfnt_off0000ef81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF81 10488 bytes
SHA-256: c7d791929954348150f068b44859776ffdf0933082e37b986a045285c7bcfd64

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