Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ebabe70a7a1da6…

MALICIOUS

PDF

78.0 KB Created: 2021-04-11 06:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cdf4d7faae0271b53c39429ab24c3310 SHA-1: b3ae7102774cf729e3b5a1abd4fdb7e691aa04ff SHA-256: 72ebabe70a7a1da643c3f8c6f59454d66ef15be3b38a1c6fe1f4b7b40ff9e3b4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://resalured.ru/strik?utm_term=2014+jeep+grand+cherokee+srt+service+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446491/normal_5ff53f3ea6045.pdfIn PDF document text
    • http://avit0.cc/best_goal_goal_predictions_today4fg8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487424/normal_605f6aa24c124.pdfIn PDF document text
    • https://fowidejufato.weebly.com/uploads/1/3/4/5/134582967/zezipowefeda-xilejetala-norawosavewej-doruponox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5fe1118552ca9.pdfIn PDF document text
    • https://dikasawo.weebly.com/uploads/1/3/5/3/135349802/6665810.pdfIn PDF document text
    • http://kersita.space/alaska_drivers_license_vision_test_florida6hr1g.pdfIn PDF document text
    • http://timelessdecorum.com/doll_house_cake_cookingi9ae8.pdfIn PDF document text
    • http://sy0n.icu/kuditefuguzoyg5y.pdfIn PDF document text
    • http://milanbeach.fun/noun_and_adjective_worksheets_with_answersvm1i3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490757/normal_5fe0437a420a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5fd9a22f777cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426701/normal_60649ff8af6ca.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/7ee03cc3-9ff5-4b9a-9c5e-6427c5824ade/end_of_the_world_song_jojo.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/byfield_school_ofsted_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/732fea7f-c580-46cb-9d25-2848dc3f7d03/5396653869.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/84475604282.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/fusegujevu.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/pufumalup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f639a1d-1eeb-4666-9f1a-97f442c2cf19/83108913692.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/4079246133.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF301 6008 bytes
SHA-256: 9d9a5802c1a0562e062fde7d1cd31cae5f58ab2e4c9428ef7e0a35f43f239b5d
font_01_sfnt_off00010762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10762 10276 bytes
SHA-256: fd9b3c8b97903b40a7005ac0c2f13168f88cb8325a3a0c559fda90d38809e225

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