Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ff471613b45c18…

MALICIOUS

PDF

93.6 KB Created: 2021-03-07 23:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bc069705b87155750e9444dc3ba5e0d3 SHA-1: 8d1e717cd4eb61b9664f49359e3efe301deb2873 SHA-256: 12ff471613b45c18788cf1917fa1a7e25d00751998e91f1ed856788057bf4c9c
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs pointing to disposable hosting, indicative of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://ponafet.ru/aws?utm_term=diagrama+de+fases+del+co2 PDF link annotation
    • http://morpeoplelife.ru/57948482529czcwx.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/94538848539.pdfIn PDF document text
    • http://dfds.in/fufukarevudajiwogizupirom2xv0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482405/normal_6015bf959dea9.pdfIn PDF document text
    • http://gojepifega.22web.org/53072158393.pdfIn PDF document text
    • http://rovexomakegan.22web.org/pejokowefukekewineresunop.pdfIn PDF document text
    • http://bonusiotsbera.online/fefonowonerivelumejowibic3aq0.pdfIn PDF document text
    • http://guwunewuwujulat.iblogger.org/bakinu.pdfIn PDF document text
    • http://kraftmann.su/wawizujirawarojinugajeliijb.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/all_pathfinder_books_downloadnxp70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411001/normal_5fdbd11d34b89.pdfIn PDF document text
    • http://it50discount.pro/36186624584xjwoj.pdfIn PDF document text
    • http://artistichomesolutions.com/3282733102365ees.pdfIn PDF document text
    • http://gekifek.scienceontheweb.net/painting_kitchen_cabinets_before_and_after_photos.pdfIn PDF document text
    • http://ottics.ru/vewowoagelc.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bodirinukamole.onlinewebshop.net/nudijima.pdfIn PDF document text
    • http://xepuzakudera.atwebpages.com/5_love_languages_apology_profile.pdfIn PDF document text
    • http://rinotox.rf.gd/table_calendar_psd_template.pdfIn PDF document text
    • http://wivufakumetewiv.rf.gd/2006_honda_civic_coupe_exhaust_diagram.pdfIn PDF document text
    • http://ditajizuru.rf.gd/fulalonifedunetajepatiwim.pdfIn PDF document text
    • http://mizuselafu.rf.gd/pathology_book_for_mbbs_quora.pdfIn PDF document text
    • http://zuvolape.epizy.com/free_after_effects_templates_wedding_titles.pdfIn PDF document text
    • http://toxiwudogosos.epizy.com/life_comes_from_life_and_cannot_come_from_non-life.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C1 1696 bytes
SHA-256: 2e3af33663d03ec9a00a2230504bb9e8f98e67bd55fe1d0bcc4ef3f4c4b957b0
font_01_sfnt_off000121bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121BB 2900 bytes
SHA-256: 68d094faf81d2ea9f62e68ee4e789e40b6192f27e323b9e50c58fbaa8f881837
font_02_sfnt_off00012bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BFE 5472 bytes
SHA-256: 8337722011772544435cceb12692ecf3fa47dc7053acf3527416a0cedcb7b32d
font_03_sfnt_off00013e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8D 12932 bytes
SHA-256: 60268b63f93bc01f94128569d839594f36ff0daef20567401c0e46464609f2c9

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