Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b003281c2565a9…

MALICIOUS

PDF

80.0 KB Created: 2021-03-26 03:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 0d0c4995697c6c7a9f1a22ce3d83055a SHA-1: 9e8dd4249f1049efe0d02372fad9c45310d2b979 SHA-256: f8b003281c2565a9e9df5a33a7587da54c638c1eecd9817f536dce0b1e887e12
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://jumiwimov.ru/wix?keyword=career+of+evil+pdf+indonesia PDF link annotation
    • https://cdn.sqhk.co/feguzuvubut/dyTDibs/children_s_toy_cars_to_drive.pdfIn PDF document text
    • http://firejowetawo.iblogger.org/which_book_is_best_for_ethics_integrity_and_aptitude_for_upsc.pdfIn PDF document text
    • http://pirugaf.iblogger.org/vulepanoxodi.pdfIn PDF document text
    • http://noxetoporobosek.sportsontheweb.net/24544485867.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/non_parametrik_testler.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/ijdjhjj/tegefuzurowelusekib.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/aShgPiU/funny_memes_stickers_wastickerapps_2020_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavibajegis.onlinewebshop.net/kubilu.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/xixuwugulitusemujawizeze.pdfIn PDF document text
    • http://depebovibu.epizy.com/59551327318.pdfIn PDF document text
    • http://zunuwovadete.epizy.com/wepiginofujezoboxiza.pdfIn PDF document text
    • https://71b4061d-0fbe-47a8-a671-08758978b022.filesusr.com/ugd/0216f2_a9ea1745bc704cd79807c08dabc7a208.pdf?index=trueIn PDF document text
    • http://govujetimavex.epizy.com/doxanugibu.pdfIn PDF document text
    • http://fezigaf.epizy.com/easy_vegetarian_dinner_uk.pdfIn PDF document text
    • http://vekejuf.atwebpages.com/srimad_bhagavad_gita_kannada.pdfIn PDF document text
    • http://rifoxadil.rf.gd/17369719019.pdfIn PDF document text
    • https://1de4b56a-3309-4767-83a2-f1bb1ea7c594.filesusr.com/ugd/a6e5e9_86e6f7e301d1424387e8161dba0a52bd.pdf?index=trueIn PDF document text
    • https://2f60c0de-bae8-48d8-8f3f-ce7907f87c52.filesusr.com/ugd/badafb_b7901fcec9f3472393837ee0e0aab30f.pdf?index=trueIn PDF document text
    • http://fuzakumadobujav.epizy.com/batman_a_death_in_the_family_movie_watch_online.pdfIn PDF document text
    • https://1b6fbac1-9b66-4609-9151-81f5d4c316f7.filesusr.com/ugd/5e81b9_de0a4e1067e34169b6a731417bb4627e.pdf?index=trueIn PDF document text
    • https://d90bda3b-35dd-409f-9d4b-b4a00d881a52.filesusr.com/ugd/b88e3d_527b39eafff743609621205233104705.pdf?index=trueIn 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_off0000f7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A4 5000 bytes
SHA-256: 0b6ed3e206dd94f79387dd7f929587909c6af4488364aac6553d3a7f23c1b2a3
font_01_sfnt_off000108b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108B9 13028 bytes
SHA-256: 9b6a64d6c229d5b421bd3eb8f96491e8867413619de9368317b04423bc6a5ac1

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