Malicious PDF — malware analysis report

Static analysis result for SHA-256 532d1ed51e77148d…

MALICIOUS

PDF

78.2 KB Created: 2021-02-17 19:31:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5e627e6fdff6c7f9f6dccb370691c6f5 SHA-1: e9de5a4dbd02bd284597209f0129917a170cc1e8 SHA-256: 532d1ed51e77148dd1be8dcdf0abdafb06f90aad8a672ca728a38166dc3f886c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/wix?keyword=jensen+property+management+%2526+leasing+mesquite+nv In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445869/normal_5fd7890418537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426543/normal_5ff676b1d258a.pdfIn PDF document text
    • http://ig-about.net/pibisoxovosk4u08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480580/normal_5fdac5e32a8ca.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451736/normal_5fc9f8d8e1625.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481831/normal_600604330ed7d.pdfIn PDF document text
    • http://bitipusefotas.66ghz.com/booty_band_workouts.pdfIn PDF document text
    • http://bestplacefor.rest/trend_micro_worry_free_services_advancedxj1t0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/48495215845.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/excessively_crossword_puzzle_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/zaribazezujib.pdfIn PDF document text
    • http://didazejitikav.rf.gd/album_new_song_2019_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/samabojefizajajonixoreg.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/sebaxepose.pdfIn PDF document text
    • http://mibesajaku.epizy.com/gastric_bypass_pre_op_diet.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_off0000f5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A7 5196 bytes
SHA-256: 16ba83468b01cbc3cafcd79465fca0e5573187123581ea80b6433beb05925ca5
font_01_sfnt_off00010749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10749 10904 bytes
SHA-256: 5910b4368f787c3821a8ee884399dc961eeae7cc53d84cec9fc7db1e394da765