Malicious PDF — malware analysis report

Static analysis result for SHA-256 07cd0fcf2a3b4068…

MALICIOUS

PDF

73.7 KB Created: 2021-03-15 00:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c9b9f8cd63634ebebb8bf2a1ee8cc85d SHA-1: dd39b790565aa0b977ae64195518d75bdd98298c SHA-256: 07cd0fcf2a3b4068220cab0098be0eeb5c1b08321535bd0f2515c94d604f755e
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 0.9998

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
  • 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://lozipotod.ru/wix?keyword=julian+middle+school+julian+ca PDF link annotation
    • http://rerulekoba.66ghz.com/avivamento_adorao_central.pdfIn PDF document text
    • https://poxawakepuk.weebly.com/uploads/1/3/1/6/131606289/dekujupokoresori.pdfIn PDF document text
    • http://julaximufe.66ghz.com/paris_le_marais_self_guided_walking_tour.pdfIn PDF document text
    • http://meetraisins.club/789282668kvp6i.pdfIn PDF document text
    • http://instas.site/87507429594uj02p.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/dxIsgib/70410851863.pdfIn PDF document text
    • https://cdn.sqhk.co/matikefateri/gYHcNwP/at_t_thanks_not_working.pdfIn PDF document text
    • http://ejqy.com/how_rich_are_the_top_1_percent_ukau5gj.pdfIn PDF document text
    • http://edaruzal.xyz/lg_v20_battery_lifeby729.pdfIn PDF document text
    • https://lanoxujuzon.weebly.com/uploads/1/3/4/6/134630121/4439ec5e.pdfIn PDF document text
    • https://xovobinawulum.weebly.com/uploads/1/3/4/8/134883327/e45687.pdfIn PDF document text
    • http://freshmind.net/74295022545rbd92.pdfIn PDF document text
    • https://cdn.sqhk.co/ralapogifur/bPshdhc/good_food_guide_awards_perth.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/844f799f-a136-4e72-94be-43c6da0addd7/john_deere_x324_hood_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1852ff-3ba3-46d6-ad45-91d64990f880/88066731670.pdfIn PDF document text
    • http://lojaxafolato.epizy.com/38305813913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44fe089-887c-4fd7-ab04-babee1990e16/gakedifosuvipi.pdfIn PDF document text
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_788f1d0e640247ee818f6020f2d57845.pdf?index=trueIn PDF document text
    • https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_bf3dc514dd394333ae242ab17b7af5d5.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

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_off0000dda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA8 5148 bytes
SHA-256: 48a67ac9330cf4360876952e2eba241a0f8b8b71f82d7972f8c628e4907f556c
font_01_sfnt_off0000ef0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0B 12348 bytes
SHA-256: 5b94826b5892c8334ca04516a49e12dfa7ecf1d6afd31938aa42b1d05fc4709a

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