Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebac940e5fdcfbaf…

MALICIOUS

PDF

87.7 KB Created: 2021-03-17 19:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a392dffb8543ec02eee0f99a825e2835 SHA-1: 52230d3772b350dc9fa91ff32a7d8520793fad78 SHA-256: ebac940e5fdcfbaf11923c96de9f20853069c63a7af01ee23ca2c0f2178f3a62
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 0.9997

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://dugedepap.ru/wix?keyword=hi+word+crush+letters+answers+2 PDF link annotation
    • http://stopnutristrike.ru/imdb_your_guide_to_movies_tv_shows_celebritieskzybj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404723/normal_5ff8dc355fbaf.pdfIn PDF document text
    • http://d-youtube.com/861143916376rafl.pdfIn PDF document text
    • http://topcreditmonitoring.info/nitogekinjbbz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408460/normal_5ff20a0c5637b.pdfIn PDF document text
    • http://hookup153.fun/how_much_money_did_fifty_shades_of_grey_actors_make7y76o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379844/normal_60050a8f37d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493198/normal_604920bb17abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450040/normal_6037d32c49a81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5fe93977c6c0b.pdfIn PDF document text
    • http://cetakchantek.com/comentario_biblico_mundo_hispano_salmoseotw3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425238/normal_6033871cd26c0.pdfIn PDF document text
    • http://uablog.website/sears_10_compound_miter_saw_manualcktsl.pdfIn PDF document text
    • http://lifeit.pro/how_to_use_insulin_pen_with_safety_needlemp3hc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sufekowanak.rf.gd/toestemmingsformulier_alleen_reizend_kind.pdfIn PDF document text
    • http://xoxobesoxiti.epizy.com/analog_video_camera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d1078af-5670-4b88-8aff-d81c4d8071ee/cricut_expression_24_personal_electronic_cutter.pdfIn PDF document text
    • http://nejoselox.epizy.com/41043967623.pdfIn PDF document text
    • http://sobibuxasegisun.rf.gd/wemawobogulix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a689a41f-f486-4cd4-aab3-c433c1cba6fa/thetford_toilet_faults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/223648d7-7692-4909-b171-d6e52a306595/sao_light_novel_volume_16.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_off00011590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11590 5212 bytes
SHA-256: 56a3f90cb4cba3497df8226fd74bf907f8da6359e6c1ba6eb32e7b39b6398bb6
font_01_sfnt_off00012752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12752 12296 bytes
SHA-256: e4d32189b8bd2320d054d5d264bc8638b8f407200ddc4a5f377a4bd9cea55f97

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