Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4466b884db6484c…

MALICIOUS

PDF

81.7 KB Created: 2021-03-28 15:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a836126d69d4d3a0d1cb71199dc60ddb SHA-1: bc4aa4f254a0ed9907d8e208465316fb651ffb4c SHA-256: e4466b884db6484c171bba2b31baae1bfbb0a0a4f3bddb2c56ce4def73ce3a48
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://druttle.ru/wix?keyword=guns+of+glory+free+gold+hack PDF link annotation
    • https://zeposonuvijuz.weebly.com/uploads/1/3/4/7/134702940/1934a4e97954.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/64936275532ilea.pdfIn PDF document text
    • http://creditreportus.info/electricity_and_magnetism_3rd_edition_by_edward_m._purcell89i26.pdfIn PDF document text
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/5097620.pdfIn PDF document text
    • http://samettemiz.xyz/blood_bowl_team_draft_listnuggf.pdfIn PDF document text
    • http://ninefukesat.iblogger.org/kjv_apocrypha_concordance.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/k8ihigf/81881988622.pdfIn PDF document text
    • http://shop-kid-toys.online/how_to_draw_book_for_teenager2likl.pdfIn PDF document text
    • https://cdn.sqhk.co/ruradavi/iAibBJ4/mugesu.pdfIn PDF document text
    • https://cdn.sqhk.co/wolanojijen/hz8aphh/tnm._top_up._tnm_smart_app.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/lurijajaptaf3n.pdfIn PDF document text
    • http://tojukuw.iblogger.org/65218049690.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roxegubipav.epizy.com/lizoxijumosebarevev.pdfIn PDF document text
    • http://puvipul.epizy.com/questes_anlise_combinatria.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/56075834201.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/samsung_galaxy_note_4_price_philippines_olx.pdfIn PDF document text
    • http://kutadomirezo.rf.gd/jspdf_autotable_example_jsfiddle.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/calligraphy_alphabet_fonts_free.pdfIn PDF document text
    • http://xitanevakuzog.epizy.com/4827738355.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/78611712571.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/bedalibarodigak.pdfIn PDF document text
    • http://zusomiverufal.rf.gd/tupumu.pdfIn PDF document text
    • http://mifofofavu.rf.gd/49539894675.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE5 5480 bytes
SHA-256: a0d8c859468babc26268267d114d84f6b099dae86f1715b2d8dd539ed97acec0
font_01_sfnt_off0000fd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8D 11432 bytes
SHA-256: 2622d446104d1c5c58675a05113267f4d2551181f8905d69ceea407c134c170a
font_02_sfnt_off000123c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C9 16080 bytes
SHA-256: 3a0f8ed008c79ef5fc1e40fbe805bb4ed86c3b537cef76351acb51b29d81aea7

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