Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f14ab0e37255ed…

MALICIOUS

PDF

70.0 KB Created: 2021-06-13 16:40:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dd54955ed97d441e57258c6113bb2f8e SHA-1: c3d3681fbb16127b5d6422d04b322c1553f1f179 SHA-256: d7f14ab0e37255edc4ac7004a5cb4878eb522b432031969e81178ab1438a13fd
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-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://nomylo.ru/pbw?utm_term=barn+find+lakehurst+forest PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425917/normal_600f9687884a1.pdfIn PDF document text
    • https://woxogobigevi.weebly.com/uploads/1/3/0/8/130814596/mapamojulofil_zisaxaludopetob_ruzoxisuxetev_toxaraxotanis.pdfIn PDF document text
    • https://xezuzevujuniz.weebly.com/uploads/1/3/4/5/134586082/bonoror.pdfIn PDF document text
    • https://vuzufakafedovi.weebly.com/uploads/1/3/5/3/135347170/3082833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426549/normal_6019c7c723a21.pdfIn PDF document text
    • https://sirukume.weebly.com/uploads/1/3/0/8/130814715/a0aae0ff10684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipoziw.pbworks.com/w/file/fetch/144439923/85669786973.pdfIn PDF document text
    • http://jiboduxoguv.pbworks.com/f/pokemon_go_joystick_mod_apk_download_2018.pdfIn PDF document text
    • http://gijorugisaw.pbworks.com/f/82659782956.pdfIn PDF document text
    • http://bupataved.pbworks.com/w/file/fetch/144739947/malayalam_mappila_video_songs_free_download.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/f/kotigare.pdfIn PDF document text
    • http://zuxanoguk.pbworks.com/f/mavimanozorowogu.pdfIn PDF document text
    • http://fagizeliwud.pbworks.com/f/gta_san_andreas_download_free_pc_windows_10.pdfIn PDF document text
    • http://daladefadus.pbworks.com/w/file/fetch/144870222/sosakupakupimisazazowagen.pdfIn PDF document text
    • http://faxamom.pbworks.com/f/12646732892.pdfIn PDF document text
    • http://nowefuro.pbworks.com/f/how_to_change_keurig_k50_water_filter.pdfIn PDF document text
    • http://dajodovilav.pbworks.com/w/file/fetch/144564315/the_8_parts_of_speech_diagnostic_assessment_worksheet_answers.pdfIn PDF document text
    • http://fuxotatizexu.pbworks.com/f/lumerewe.pdfIn PDF document text
    • http://najajadux.pbworks.com/f/gta_4_xbox_360_mod_menu_download.pdfIn PDF document text
    • http://guvevef.pbworks.com/w/file/fetch/145161240/1_kata_karate_shotokan.pdfIn PDF document text
    • http://neruwuk.pbworks.com/w/file/fetch/144420417/how_to_enter_bios_acer_predator_helios_300.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d87a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87A 5108 bytes
SHA-256: 9430132c5b0c3ce9e28ed0d0d88499e8daf91df61adf153cf29114a98dca585d
font_01_sfnt_off0000e9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D6 9692 bytes
SHA-256: 9b28acafd2684a88647cacc6cf9bc95dd1953b1f4eb0ce166e310d96a66172d2

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