Malicious PDF — malware analysis report

Static analysis result for SHA-256 629c0b3352338aac…

MALICIOUS

PDF

70.3 KB Created: 2021-03-18 20:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 303eb037bffeeda4443b1861709418f7 SHA-1: 525c200d925463c8b31baf0607a2533f70fcc8eb SHA-256: 629c0b3352338aac41ca6e07752c025da6443d3a4d6d990f675a5c0c05553a10
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/123?utm_term=annett+louisan+zu+viel+information+songtext PDF link annotation
    • http://housefashion.ru/les_mis_victor_hugo_book45swe.pdfIn PDF document text
    • http://fusexetop.22web.org/kitufagovonu.pdfIn PDF document text
    • http://bigpleasure.ru/gapezopden2.pdfIn PDF document text
    • http://julozagoren.22web.org/troy_bilt_pony_tiller_engine_oil_capacity.pdfIn PDF document text
    • http://vavimaj.iblogger.org/how_much_does_a_crossfit_gym_cost_to_open.pdfIn PDF document text
    • http://netezasodi.22web.org/tumobenojonezepuniki.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/fd2c259b-d34c-4f65-9753-2a2d8e94bfd0/nikon_m-223_ar_rifle_scope.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/where_is_the_wps_button_on_my_arris_router_tg3452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ca976e-343a-498b-b7ca-5446c02509df/80300855942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99552262-1a12-4f9a-a877-5f83d73510c4/broan_stove_hood_repair.pdfIn PDF document text
    • http://junipom.rf.gd/how_to_recover_dsc_password.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/creo_parametric_5._0_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c44ec0-b945-4996-8e32-8fd9229b7f5e/how_to_fix_indoor_motion_sensor_light.pdfIn PDF document text
    • http://sofirenapirovo.rf.gd/university_of_alabama_campus_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f193abf2-1a3a-491f-99c0-b356eef0a1fc/ley_4_2017_del_suelo_de_canarias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b102992d-3ea3-4bab-bcd9-77b944066aa6/how_to_charge_jbl_tune_205bt.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/73503208934.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb6594db-e185-4b98-a577-ec92dfc03c18/pride_and_prejudice_full_movie_online_free_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/22974888727.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/72733610622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a4904c5-81a0-4388-92e5-9018c01de8d6/kizutenujazawaxulova.pdfIn PDF document text
    • http://donosusiligid.rf.gd/fedebotamuwefowiwa.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_off0000d380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD380 5256 bytes
SHA-256: 074ff73ab9e8e5bbcfb78fe1b38431279d6fe31df6ff41483acd8cacd95bb0b9
font_01_sfnt_off0000e560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE560 11060 bytes
SHA-256: 4573e905aa21c826e5e159f44b7e3526a8b6b96055822238c19ba9c967691fa1

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