Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e465cbaa891897…

MALICIOUS

PDF

80.7 KB Created: 2021-04-19 22:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 10c2ef7dce00673fbe975e63f91fdd69 SHA-1: 4f83d53c9cf84081d093af24d90e6775bb7fec70 SHA-256: d1e465cbaa891897487953700df151c410a029edea04a8f9baa1ea1170696052
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=elements+of+musical+theatre+songs PDF link annotation
    • http://shop-you.xyz/a_different_mirror_chapter_9_summaryxoils.pdfIn PDF document text
    • http://gta-msk.ru/xetosakaxukakakowumiye8ld.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdfIn PDF document text
    • http://siraxadujegari.iblogger.org/chuyn_thnh_jpg.pdfIn PDF document text
    • http://teachost.com/sidof6alay.pdfIn PDF document text
    • http://lnstagram-office.com/porter_cable_20v_max_16-gauge_straight_finish_nailer_kit27t6q.pdfIn PDF document text
    • https://cdn.sqhk.co/furafurume/yhbhgJl/felajapidol.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/chtfRM5/sdge_customer_service_line.pdfIn PDF document text
    • http://ideal-it.fun/data_specialist_interview_questions_and_answersrol1b.pdfIn PDF document text
    • http://duvazejezirofid.22web.org/29701572369.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/jitwJja/91577170854.pdfIn PDF document text
    • http://crawlmqyu.space/skyrim_best_mods_xbox_one_2021vs1i2.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/ifVgj7b/60344950656.pdfIn PDF document text
    • http://promooffer.site/sme_underground_mining_methods_handbookthr36.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zodezugazo.rf.gd/monheim_s_textbook_of_local_anesthesia.pdfIn PDF document text
    • http://dukifubu.epizy.com/16436909004.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28f6460-5906-4637-b22b-7309e53853f7/2005_jeep_grand_cherokee_wont_start_service_elec_brake_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c987f44-cede-4023-b443-390a0c808394/vafosebewojazononuzuvamav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75be959c-c51e-4c89-82fa-b01b856df461/principios_del_evangelio_mormon.pdfIn PDF document text
    • http://zusewijoje.epizy.com/55833790751.pdfIn PDF document text
    • http://mozolawaguj.epizy.com/84057978649.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_off0000fd53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD53 5252 bytes
SHA-256: 1c890554369e76dbd44738a621a1b6f7c0d4fb51d71a22ac819638aac18487a9
font_01_sfnt_off00010f08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F08 11576 bytes
SHA-256: dc0e2318516fefa2750602254ba3fb066e9bb1559399fff39409a284bd387400

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