Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b020d928216d775…

MALICIOUS

PDF

79.2 KB Created: 2021-03-22 10:55:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 603da878d461071af168c6ba88ae9523 SHA-1: ab619c03360611ec94fdf944f5f3793bb2f13969 SHA-256: 6b020d928216d7757b717475a52fa7be65a318cd8fadd758a526ff71267bd4e6
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL suggesting a phishing lure related to an 'email formale inglese allegato'. The presence of multiple disposable domains and link farm characteristics further supports a malicious purpose, likely to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://dugedepap.ru/123?utm_term=email+formale+inglese+allegato PDF link annotation
    • http://legiontry.online/scientific_american_psychology_3rd_edition_lichtshfb1.pdfIn PDF document text
    • http://swiss-gear-top.xyz/cooks_waffle_maker_rebateec29y.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/vumikiruzena.pdfIn PDF document text
    • http://kupivse.xyz/salutobekofabitz94vo.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/kobujinutejokenaziwz5xc4.pdfIn PDF document text
    • http://solapp.xyz/41485696522fo4wm.pdfIn PDF document text
    • http://fuxofexafot.iblogger.org/jemizud.pdfIn PDF document text
    • http://parhelifrl.space/free_avast_for_windows_7_offlinew4on1.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/jawipajasazamajexaz.pdfIn PDF document text
    • http://sq11mini.com/can_i_use_ps3_controller_on_pc_fortnite2ilwd.pdfIn PDF document text
    • http://esportzmlevent.com/instagram_stories_onlinefd35l.pdfIn PDF document text
    • http://jijoxep.getenjoyment.net/love_psychology_facts.pdfIn PDF document text
    • http://sallehq.xyz/mufoporadaratutilupe2rizq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fabupumow.epizy.com/whirlpool_gold_quiet_partner_iii_filter_location.pdfIn PDF document text
    • http://difeligaken.epizy.com/nlt_life_recovery_bible_large_print.pdfIn PDF document text
    • http://mobotifiriw.epizy.com/draw_io_templates.pdfIn PDF document text
    • http://nonulalomijowo.epizy.com/architectural_design_symbols.pdfIn PDF document text
    • http://bolanid.epizy.com/43931394256.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/3590601343.pdfIn PDF document text
    • http://xidalagep.myartsonline.com/of_mice_and_men_chapter_1_audio.pdfIn PDF document text
    • http://zulexesovo.epizy.com/3d_video_animation_tutorial.pdfIn PDF document text
    • http://ditatunejapazik.epizy.com/2413483661.pdfIn PDF document text
    • http://bideliv.rf.gd/when_is_green_eggs_and_ham_season_2_trailer.pdfIn PDF document text
    • http://rigamijuzekup.rf.gd/66570146684.pdfIn PDF document text
    • http://xiwomewumusebif.rf.gd/c_programming_notes.pdfIn PDF document text
    • http://vukekabexipog.rf.gd/jebeb.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_off0000f615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF615 5044 bytes
SHA-256: 1661bdd581158ef4a17b6d851f5ef3ca67da6c46bf0c09dcf2106033bf773fe7
font_01_sfnt_off00010728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10728 11768 bytes
SHA-256: 46b2c12fcbc93c51b2a638bd0b930e752d909e83e95010c6ed9d7bcf1f8327eb

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