Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdf361c15f144e4…

MALICIOUS

PDF

69.7 KB Created: 2021-02-13 18:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6f41da2d4b8536d7629e4db6a5a6c92b SHA-1: fa1795240d67935f844f1b74b2aac90349d66927 SHA-256: 1fdf361c15f144e4074a777a553a6d4e65e2fe2ee94ae6957e7e13f38ff03b61
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=exponentes+y+radicales+formulas PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365536/normal_5ffdffb8d1723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_60128cf9a52ab.pdfIn PDF document text
    • https://zobojosapez.weebly.com/uploads/1/3/1/4/131483592/4251030.pdfIn PDF document text
    • http://tepafuvofes.iblogger.org/96756478215.pdfIn PDF document text
    • http://xoxinusenavi.66ghz.com/osrs_demon_slayer_quest_guide.pdfIn PDF document text
    • https://naratejog.weebly.com/uploads/1/3/2/6/132682615/ec11f.pdfIn PDF document text
    • http://umkatrade.ru/honda_cb400a_service_manualoei53.pdfIn PDF document text
    • http://shoppermarket.online/c_report_viewer_dllqv3t7.pdfIn PDF document text
    • https://bogizironafek.weebly.com/uploads/1/3/1/4/131406395/a9006e3f83ca121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuludipetowizad.rf.gd/jinisis.pdfIn PDF document text
    • http://minirulo.epizy.com/elazko_philips_azur_performer_calc_clean.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/uc_browser_pc_2018_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/gottfried_bammes_complete_guide_to_life_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/xezipeg.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/cold_air_intake_performance_difference.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/65001118851.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_off0000d05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05C 5428 bytes
SHA-256: 3ad29271e4874e5864491a1fe7dddd20ba76222d8fda29994d20634c77e4653c
font_01_sfnt_off0000e2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D3 11472 bytes
SHA-256: 2c700f600a7ae706a615308b302d2f1d25fabf65b130dcbf57c3959fd9f3c3f4