Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5e80a45c1f255c…

MALICIOUS

PDF

650.1 KB Created: 2021-03-16 04:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 3b06d60698717aacd5da88a532633799 SHA-1: bc47bfc988a5382f2e847ed49c2137161d1fc8d8 SHA-256: 2e5e80a45c1f255cf12a8ba6201304f0f9f9ed13409be52b930a3169ab159665
136 Risk Score

Malware Insights

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

The PDF contains a high-confidence heuristic indicating it's a phishing lure, directing users to a suspicious URL. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were extracted, the embedded URLs and the 'free-download phishing' heuristic strongly suggest the document's purpose is to redirect users to a malicious site for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7489

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://lozipotod.ru/strik?utm_term=the+best+game+company+names PDF link annotation
    • http://finipupote.mywebcommunity.org/the_monkees_daydream_believer_sheet_music.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/cantilever_beam_design.pdfIn PDF document text
    • http://zitirisiz.mywebcommunity.org/12981507865.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/acCgdgg/captain_marvel_hd_movie_tamilrockers.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/27016489172.pdfIn PDF document text
    • http://felesatediz.medianewsonline.com/adjustment_computations_spatial_data_analysis_5th_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/lilovenodi/jghific/application_vitmat_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380525/normal_5fff09552b87c.pdfIn PDF document text
    • http://matimomewojime.mypressonline.com/linux_system_administration_commands.pdfIn PDF document text
    • https://cdn.sqhk.co/kitatoze/ageihid/dirizolizijabit.pdfIn PDF document text
    • https://cdn.sqhk.co/bipokagiti/eHo2hhP/learn_languages_with_music_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_60215994a1c4a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3dbd840c-7861-42b4-b064-af52d1d2f4eb.filesusr.com/ugd/86319b_f4fc333da8d54884a1d830143a8e316e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1e8c62-bec5-41fb-8760-60b2cb1d01fa/21138422498.pdfIn PDF document text
    • https://146c8b6c-0b46-450b-8ed0-b45f1e2a4974.filesusr.com/ugd/b58d21_f0f003faf651487bb6490ce585d54fa3.pdf?index=trueIn PDF document text
    • http://baxewape.myartsonline.com/write_a_two_paragraph_essay_describing_the_pyrenees_and_the_alps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29224c9d-9bd0-42ae-9651-93ea01187391/poroguxivi.pdfIn PDF document text
    • https://56f9ebfc-1b58-4ccd-90b9-24793863e956.filesusr.com/ugd/0f3536_742db1e0ad3f4377a019e32bdfeca66a.pdf?index=trueIn PDF document text
    • http://judiserod.onlinewebshop.net/47582708240.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_d3a4ab0197d94966a55485aafed5e4dd.pdf?index=trueIn PDF document text
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_a3e6b7c0502e41a89fcd4a8efdb44126.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0009bdb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDB6 5408 bytes
SHA-256: a487f97b02007af55bba242491e302a9dd6def610840710e3eb85f415e6fb7e9
font_01_sfnt_off0009d00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D00C 14720 bytes
SHA-256: 8114ec7a8d57d62520fcd21daa23832f46be0c86be1aa6f1f82dc9640f43b5c8
font_02_sfnt_off0009fe8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE8D 16204 bytes
SHA-256: e957770e2a21abf6ac6230d68134c9908d4afe183941278de3dcc9561494f25a