Malicious PDF — malware analysis report

Static analysis result for SHA-256 570d7e3ecda367d4…

MALICIOUS

PDF

71.9 KB Created: 2021-03-28 19:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dd1a8e8e53a2a2ee77ad17c0ef7fab7c SHA-1: 8a4fbb3a50e00262a7b2aec454a97663dc88af85 SHA-256: 570d7e3ecda367d491a8617cf55261d9429608d15ec37c1404eff1991f9485cd
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 0.9996

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://bologen.ru/strik?utm_term=rosencrantz+and+guildenstern+are+dead+movie+viewing+guide+answers PDF link annotation
    • http://risumeboze.getenjoyment.net/8749355206.pdfIn PDF document text
    • https://pizizidoto.weebly.com/uploads/1/3/0/8/130873839/f1fcfa77df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383573/normal_60159e3ec25a8.pdfIn PDF document text
    • https://cdn.sqhk.co/miwiwefe/EJ8DghN/nuludakukozuzafet.pdfIn PDF document text
    • https://sotugenedoximo.weebly.com/uploads/1/3/4/0/134040923/6102bddc1b8598e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477630/normal_5fe64e962fe4c.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/ehcGgu1/best_yellow_cupcake_recipe_from_scratch.pdfIn PDF document text
    • https://cdn.sqhk.co/bawusipa/9ljexhb/world_war_z_2_game_release_date.pdfIn PDF document text
    • https://lumovomudin.weebly.com/uploads/1/3/4/7/134704265/runudewofak-malusogemilewu-suzonatamujamu-jotipimekaz.pdfIn PDF document text
    • https://japidofig.weebly.com/uploads/1/3/4/5/134503064/319108.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/1e411521-15bc-4227-bd43-db0937539a54/crosley_c6_turntable_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a4edd8-80cb-4041-8931-298fe38afbe0/18366796313.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/linux_shell_script_variable_in_string.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28a7975a-d873-49f1-9ade-7e13407c5d5f/murray_push_mower_bagger_attachment.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/90874285149.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/unearthed_arcana_artificer.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/nifofapoza.pdfIn PDF document text
    • http://seroroxunabolu.onlinewebshop.net/jabezudo.pdfIn PDF document text
    • http://bekusisit.atwebpages.com/rational_emotive_behaviour_therapy.pdfIn PDF document text
    • http://giworutiw.myartsonline.com/como_convertir_de_a_word_gratis_sin_programas.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/brass_band_tracks.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/navozesivet.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_off0000db78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB78 5468 bytes
SHA-256: 30664e9785fec1069364b8313be21c3f885e47c09d3e3f25cfc778d10527ab45
font_01_sfnt_off0000ee19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE19 9812 bytes
SHA-256: cd20c36f22d20b6f9beabe8b5e3dc709f83fd4068d21baeb77f3f953dc8dfa00

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