Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9a5dcbe32c3f08…

MALICIOUS

PDF

74.6 KB Created: 2021-04-02 03:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 77324966c822a49e8e82ba076bf9abd3 SHA-1: 8225863ea72363aa20a9f44641e91f4cfd0687f7 SHA-256: 7e9a5dcbe32c3f086c3237f82d4d7db7d7f77c5f51e297746a0ef8b88357a6c2
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://zajinet.ru/strik?utm_term=final+fantasy+xiv+character+patron+deity PDF link annotation
    • https://cdn.sqhk.co/ragejeli/dhbEhhd/rock_and_roll_music_beatles_guitar_tab.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/b7gehc8/zegejaxufisujeruleji.pdfIn PDF document text
    • http://goldstein.berlin/how_to_crochet_a_simple_beanie_for_beginners88b1r.pdfIn PDF document text
    • http://ukrdomonis.xyz/41555423515iigoe.pdfIn PDF document text
    • http://probkin34.xyz/mirobubezakawojuvomoke99rvz.pdfIn PDF document text
    • http://7lessons.website/fiddler_on_the_roof5mr72.pdfIn PDF document text
    • http://jobware.pro/how_do_you_set_a_woods_outdoor_timerg3zjq.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/gjjgLgh/unnatural_causes_book_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/wifavizen/H9fiAif/xomelewagotojevid.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/bEgiEfq/sculpture_define_simple.pdfIn PDF document text
    • http://ig-socialmedia.xyz/shakespeare_sonnet_130_explanation2gb41.pdfIn PDF document text
    • http://mamajan.space/rv_campsites_in_myrtle_beach_south_carolina8m9w0.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/voranuwamezedujo.pdfIn PDF document text
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_9fdc92ef59d34f4dbea4d7756edc03b9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/weather_report_shimla.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/tidal_wave_2009_english_subtitle.pdfIn PDF document text
    • https://aa6eca1a-c690-4a36-985e-a873157a80b3.filesusr.com/ugd/081493_7955748f5de547d7b2b44e9ca77531f1.pdf?index=trueIn PDF document text
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_0f908104f51d48a6a38ac9d90350ec26.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/kinadubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe570965-da96-4a63-bdda-08b91047e878/41827682732.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/vemuporozukapuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc644df9-edf5-464f-8dec-5c80393b9ab5/kubota_tractor_parts_online_catalog.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_off0000e602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE602 5428 bytes
SHA-256: 1ed8ce434beed2b58525acbb8434614eba27d5f404f91ce933cabc20f34c1498
font_01_sfnt_off0000f889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF889 10676 bytes
SHA-256: d1933ed986a9f63c084d103dda6e2d518ee88ec00d673ff030ed014a430fd291

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