Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d1eebcf93d1841…

MALICIOUS

PDF

80.4 KB Created: 2021-03-11 11:44:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a151a156876e931b6a2b5b4797ca775 SHA-1: e6b4160f421a975e613881cb6a020448669db893 SHA-256: 74d1eebcf93d1841a272353b36a06d9b686bc85c67a2952aab6c654da2742114
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The document body, though heavily obfuscated, suggests a lure related to reporting frameworks. The presence of embedded URLs and the ClamAV detection strongly suggest a phishing or malicious content distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/123?utm_term=sustainability+reporting+framework+pdf
    • https://pamezupiv.weebly.com/uploads/1/3/0/7/130775156/8733925.pdf
    • http://biggymstoe.com/acting_lessons_apkzcdm3.pdf
    • https://luxisawevevolal.weebly.com/uploads/1/3/2/6/132682936/6245785.pdf
    • https://zagarete.weebly.com/uploads/1/3/4/6/134687236/kilakukibojewod_febivaz_rugidevumi_wepasuxozas.pdf
    • http://lazadacostumercenter.com/cardo_scala_packtalk_manualdd31x.pdf
    • https://jolofoni.weebly.com/uploads/1/3/4/0/134042869/manexumar.pdf
    • http://help-service-support.com/how_many_years_to_become_an_emergency_medicine_doctorbqrq8.pdf
    • https://zokelafeg.weebly.com/uploads/1/3/4/8/134889419/zikabamoralowaxaza.pdf
    • https://fizinizaboz.weebly.com/uploads/1/3/5/3/135304720/lufanojikadajemalej.pdf
    • https://xexonukomamub.weebly.com/uploads/1/3/4/3/134353621/funofabewonitonibafi.pdf
    • http://bigchance.pw/tejimemapibewodazuvisonqpb5l.pdf
    • https://mivewuwadomabat.weebly.com/uploads/1/3/1/6/131606259/2d68c.pdf
    • http://badgesverified.com/2002_mini_cooper_repair_manualrau8j.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://22fea36a-5e19-4af1-b4aa-fe6e1efe0ee9.filesusr.com/ugd/b5a188_fffe3be37b1948759f06bcf4becf3780.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cc34ac20-6393-4df1-a3f9-145677bb4687/what_grade_are_john_and_lorraine_in_the_pigman.pdf
    • https://uploads.strikinglycdn.com/files/d59b4436-86be-475d-af27-c4548f3c91a9/runerakilebaxul.pdf
    • https://uploads.strikinglycdn.com/files/f4b3d36e-d82e-41c7-afb1-c25aaa3cf1f0/witcher_2_ps4_amazon.pdf
    • https://uploads.strikinglycdn.com/files/b00adb87-9fdf-4eb4-9b5c-66854a30e9c8/10998508666.pdf
    • https://uploads.strikinglycdn.com/files/9dfdf6bb-9bee-4b4d-8bdf-1d9d64cd22de/pipemaxotipadawonadof.pdf
    • https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_c1d6dc7fc76e4f2996d61269aa8551ca.pdf?index=true
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_4e2466fb745f4a7db870276288087d81.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0c6dae04-7a9e-4bf6-b3e2-dcefd18d01cd/pofojujapasuzodiv.pdf
    • https://uploads.strikinglycdn.com/files/367591fb-9001-40c9-ab0e-d1465c15a78f/diary_of_a_wimpy_kid_full_movie_dog_days_online_free.pdf
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_537ab83e049a4c12bdedba19d4739fc0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c394e3f0-b562-47d9-802c-b2bbe4753ab7/28962185749.pdf
    • https://uploads.strikinglycdn.com/files/95a91ac4-88cb-42d9-835d-86a29eb6fb4a/vowosozutajut.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbcb.bin
b2804ed285519bcf40d134354e59986bad597b273f879c08e48e888a7e9793a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCB 5860 bytes
font_01_sfnt_off00010fc0.bin
c1deb18abe1e236860ab46a59854f313bae4b6c729e812f1a266139850817993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC0 10516 bytes

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