Malicious PDF — malware analysis report

Static analysis result for SHA-256 9261704c1a694139…

MALICIOUS

PDF

88.7 KB Created: 2021-03-22 21:22:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f77208a6cde60c05303ed13fabaa7a3e SHA-1: 31ee15a49fd166e3287f7105b11e1f7639ed33e4 SHA-256: 9261704c1a6941393ea9cb31f364db2e4c78e5afdddf3c4e391d475841d9ffaf
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 0.9993

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://druttle.ru/award?keyword=metodos+de+conservacion+de+carnes+rojas+pdf PDF link annotation
    • http://bepibolet.22web.org/68686096857.pdfIn PDF document text
    • http://jafilakawusuf.iblogger.org/wajaxuxogiritiridimejatu.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/JgiNPid/the_chosen_season_1_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/paxabuxutujo/wjgcja3/tem_agencia_do_bradesco_nos_estados_unidos.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/9e8840e1-726d-444c-b15f-80d2884b5c5d/18581510102.pdfIn PDF document text
    • http://nirufexu.rf.gd/96196598700.pdfIn PDF document text
    • http://jukiwifid.rf.gd/why_is_my_lg_portable_ac_not_cooling.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/lexusof.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/manualidades_con_madera_para_el_hogar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8cd1ac6-02b4-4e2a-b9dc-e094579f03a5/life_fitness_spin_bike_ic5_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eef031ad-1c71-4ed2-824a-e42c57417eb0/76193059334.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/manual_ge_6_device_universal_remote_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3094c793-6c52-459e-b572-8232d612e91f/15066543804.pdfIn PDF document text
    • http://savekuf.rf.gd/a343f_transmission_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e46da13a-c883-4d71-b545-b81597aea81a/46011839965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb6a2ea-7591-4838-9518-fb7948693a69/the_12th_planet_review.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/punudasidegerute.pdfIn PDF document text
    • http://susesibukof.epizy.com/1145305804.pdfIn PDF document text
    • http://ximipine.epizy.com/xijixogajodogedurotodubo.pdfIn PDF document text
    • http://tituroxir.rf.gd/title_animation_after_effects_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/old_bhojpuri_movie_video_songs_free.pdfIn PDF document text
    • http://mapixuxiloko.epizy.com/harry_potter_cello_sheet_music_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adcee737-0a44-42a8-b3d5-53afe5e429a3/what_does_chick_fil_a_ask_in_an_interview.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70002f71-8ce1-4431-a7b5-50904cbb6e6d/how_to_eat_fried_worms_full_movie_download.pdfIn PDF document text
    • http://kimitumepogamom.epizy.com/ncaa_division_ii_baseball_conferences.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_off000119e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E6 5256 bytes
SHA-256: 7f134c052716be250e785aec5f6d5dda2d14a09f758760ab8ee447b9729307b8
font_01_sfnt_off00012bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF2 12164 bytes
SHA-256: 2bed6d876047bfda45bd649a37adad432240283b9f30f3bec535db2be2aa6f34

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