Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a9e46f02688ec3…

MALICIOUS

PDF

77.9 KB Created: 2021-03-23 16:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 217d34daaf3d0ed2e50845c5638f62fd SHA-1: 8405b052a10cbbdb28e6d64cbacfcfcca1ff7091 SHA-256: 56a9e46f02688ec3cdee0a1e06ece45946b83914738f91b5f0969cc1a4d50087
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-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/wix?keyword=crock+pot+the+original+slow+cooker+instructions PDF link annotation
    • http://miromawetibikew.mywebcommunity.org/25952012695.pdfIn PDF document text
    • http://nikupajosokob.22web.org/competition_music_power_sound_mp4.pdfIn PDF document text
    • http://jotijitod.66ghz.com/flight_sim_game_app_android.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/hqhijc1/converse_chuck_taylor_platform_sneakers.pdfIn PDF document text
    • http://bujinolemisizam.iblogger.org/plant_vs_animal_cell_quiz.pdfIn PDF document text
    • http://notdull-eng.online/42386734582ekt4q.pdfIn PDF document text
    • http://nekidifuton.medianewsonline.com/simple_past_irregular_verbs_negative_and_interrogative_exercises.pdfIn PDF document text
    • http://save50it.info/safety_first_car_seat_stroller_compatibilityd3soi.pdfIn PDF document text
    • http://xexawapo.iblogger.org/mukobaxiwamosunejom.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/ifgcpJY/85790090120.pdfIn PDF document text
    • https://wifusudufasebo.weebly.com/uploads/1/3/5/9/135992472/1d1ee4cde4480.pdfIn PDF document text
    • http://carbags.site/36496861569ggb6c.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/0efe309243.pdfIn PDF document text
    • http://joweponula.mywebcommunity.org/fusionner_plusieurs_sous_mac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://revipopeguxasaf.epizy.com/how_many_amps_can_i_charge_my_nimh_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db10216b-2dd6-4c1d-a306-b7079a0d464b/ellipsis_tablet_flashing_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05331ed5-908f-4119-9b76-ef404d5c1e0a/fekarovuru.pdfIn PDF document text
    • http://kesupipipiret.onlinewebshop.net/kindle_cloud_reader_zu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2d34426-28b4-4658-bb11-0435d1634726/123_magic_parenting_course_newcastle.pdfIn PDF document text
    • http://fuluxewamotate.atwebpages.com/honeywell_cool_mist_humidifier_filter_hcm-350.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f28e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28E 5256 bytes
SHA-256: 560f49181f55e6181b9b696f2e5a3e38ff527d56aa189ef773e21f0307306be7
font_01_sfnt_off0001047d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047D 10852 bytes
SHA-256: 4f5bda05e6103bcb3b82abd11101500471f67918d42ed991ecdbc365c20426ff

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