Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e182decf9e95dd0…

MALICIOUS

PDF

72.1 KB Created: 2021-05-15 19:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 870be0d42e5ed7cecdb3e24973b6ecb3 SHA-1: 952b0bbcf637bc45bb69680115dfbef5ecc05829 SHA-256: 2e182decf9e95dd08b3510ee91411a5c2e51a866290fe4329fe15f068c1b2d0a
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 0.9991

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://fokemale.ru/strik?utm_term=complete+barbarian%2527s+handbook PDF link annotation
    • http://sugalomiwuto.getenjoyment.net/arduino_nano_caracteristicas.pdfIn PDF document text
    • http://dozokite.22web.org/kobofevonosewozu.pdfIn PDF document text
    • https://xelusivixofon.weebly.com/uploads/1/3/5/9/135958974/pegagexonut-ketatux-defibadajupowi-dogufisid.pdfIn PDF document text
    • http://nukakerosezopep.22web.org/mind_power_seduction_by_amargi_hillier.pdfIn PDF document text
    • http://kisiguvawatabom.22web.org/shin_chan_tamil_movie_mp4.pdfIn PDF document text
    • http://dajewerudo.22web.org/cheat_engine_7._8_free.pdfIn PDF document text
    • http://bajemafo.iblogger.org/accounting_dictionary_oxford.pdfIn PDF document text
    • http://tapidiv.medianewsonline.com/nofigimimabuwapafola.pdfIn PDF document text
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/buzipalexugolot_kumeba_pimirimonoz.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/bekaxir.pdfIn PDF document text
    • https://motanufogok.weebly.com/uploads/1/3/1/3/131381166/3484982.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://resilasijajatil.myartsonline.com/motowevo.pdfIn PDF document text
    • http://najejofimepesef.epizy.com/66510114919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbc18fb9-ba28-473f-a3c4-58c2dbeb3bcf/what_are_the_salient_features_of_constitution_of_nepal_2072.pdfIn PDF document text
    • http://monulaw.epizy.com/disney_movie_songs_piano_sheet_music.pdfIn PDF document text
    • http://zudobuzediret.rf.gd/74143373956.pdfIn PDF document text
    • http://mepusafufeja.rf.gd/mojipoxefivexud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12f12bcd-bceb-453d-a347-5396c9e8ca9c/massey_ferguson_parts_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b1477ee-5131-4014-bc27-ec5766fb262d/afterlife_lyrics_future.pdfIn PDF document text
    • http://zogufisuru.epizy.com/66085684299.pdfIn PDF document text
    • http://fagufobukabovu.epizy.com/34400088317.pdfIn PDF document text
    • http://fudinurozoxesa.rf.gd/what_is_culture_in_world_geography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/355dd295-a4b1-4fe8-8fe4-31571f3e22b8/52597923599.pdfIn PDF document text
    • http://nifusotajezunur.atwebpages.com/aerobic_and_anaerobic_training.pdfIn PDF document text
    • http://botejesojami.epizy.com/old_school_music_from_the_70s_and_80s_slow_jams.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_off0000db25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 5344 bytes
SHA-256: eb1d3e62a48915c224d5540e1a31ec02ff9243964b8e20b0046964183003fe96
font_01_sfnt_off0000ed13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED13 10492 bytes
SHA-256: a7d91d03df60410f8e4bbc67c8ff3835bd23e04a4e84780eda95aef7d7563a9f

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