Malicious PDF — malware analysis report

Static analysis result for SHA-256 607aa11c12b70a2a…

MALICIOUS

PDF

79.2 KB Created: 2021-03-18 08:20:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9f5072939df5703f613cf1f6a5b9fc4a SHA-1: 129efe2f64d84b8a51e7d2c56bcf1934a5ebb0ce SHA-256: 607aa11c12b70a2a698f6b45a517b8b10197ae2da5d52a036aca53dd277c5405
126 Risk Score

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 0.9996

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://druttle.ru/strik?utm_term=digital+marketing+course+in+delhi+laxmi+nagar PDF link annotation
    • http://glawerry.online/60428965355suue7.pdfIn PDF document text
    • http://reduslim-siteofficial.site/up_deled_form_date7lc9c.pdfIn PDF document text
    • http://siankaanmexico.com/1997_kawasaki_prairie_400_batterykj6d9.pdfIn PDF document text
    • http://test123test.xyz/frank_obannon_school_hammond8yoxx.pdfIn PDF document text
    • https://cdn.sqhk.co/dobexesi/6kXo4jj/line_graph_template.pdfIn PDF document text
    • http://tgesheff.xyz/rihanna_anti_album_zip_downloadzn149.pdfIn PDF document text
    • http://ketousa.site/wexetn6bck.pdfIn PDF document text
    • https://cdn.sqhk.co/wipedekis/Kifhbjg/muvumewizoxo.pdfIn PDF document text
    • http://mivetys.xyz/arms_and_equipment_guide_3.5edncrx.pdfIn PDF document text
    • http://hallop.xyz/amphitheatre_pompeii_informationoyh17.pdfIn PDF document text
    • http://counterman.ru/le_management_des_risques_de_l_entreprise7dzt2.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/suite_bergamasque_clair_de_lune_sheet_music.pdfIn PDF document text
    • http://all-casino.xyz/26737247397xnr3u.pdfIn PDF document text
    • http://sollabs.xyz/o_que_fazer_quando_as_fezes_esto_duras_e_no_saem7oajk.pdfIn PDF document text
    • http://fb-ig-violation.com/data_science_internship_in_chennaivx2lz.pdfIn PDF document text
    • http://tomolijoponix.mypressonline.com/what_defines_gospel_music.pdfIn PDF document text
    • http://seomagnat1.online/neburefoporolugip7f031.pdfIn PDF document text
    • http://barberking.best/kannada_new_sad_feeling_songsnbtc4.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/idaiaij/gold_rush_3d_max_level.pdfIn PDF document text
    • http://cybety.xyz/21844556215doz64.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/excel_vba_2d_array_to_range.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F0 5368 bytes
SHA-256: 4bd747d2a637db2b0c01820596407671d17baa85dda6ccd070c98e0998a43088
font_01_sfnt_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 11084 bytes
SHA-256: 214bff9182837940a74272bb4d956f6db8361ba2561acf7c2d0848cccc17c662
font_02_sfnt_off00011f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F30 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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