Malicious PDF — malware analysis report

Static analysis result for SHA-256 411c1986e0e39266…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 23:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 449703dbe2c5354d4e7b9b21ed22d52d SHA-1: e7087eea8a778b91678153be48b4a1f9ea1477f1 SHA-256: 411c1986e0e392663da8b1769fc4665f265a597bfc810473eda9f537de8dc3e7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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=cpm+algebra+2+answers+chapter+7 In PDF document text
    • https://tifogufa.weebly.com/uploads/1/3/1/6/131637606/tumewademezeniloziv.pdfIn PDF document text
    • https://gapetomoje.weebly.com/uploads/1/3/2/8/132816106/wedamavumodosi.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/zalotodofozijex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382208/normal_5ffa73f082f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_60176504bc816.pdfIn PDF document text
    • http://sudedelanefozuk.66ghz.com/cafe_fernando_kitap_indir.pdfIn PDF document text
    • http://vabakavolageni.22web.org/transition_words_connecting_ideas_worksheet.pdfIn PDF document text
    • https://rikidunojig.weebly.com/uploads/1/3/4/4/134488605/9934292.pdfIn PDF document text
    • https://piwaxiru.weebly.com/uploads/1/3/4/8/134882920/59097.pdfIn PDF document text
    • https://cdn.sqhk.co/kipafipigifi/f14Z8y3/98873771728.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/storyboard_pro_free_trial.pdfIn PDF document text
    • http://kugitipozad.22web.org/fosiv.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/iftjh8S/sad_ringtone_sad_song_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_5ffe16fe1d3e1.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/ggsijjh/xiposurit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sijedopebe.rf.gd/dulebusarofozaxelisiva.pdfIn PDF document text
    • http://bibarixe.epizy.com/12332137768.pdfIn PDF document text
    • http://tefetuzuzip.myartsonline.com/what_poetic_devices_are_used_in_the_poem_man_of_earth.pdfIn PDF document text
    • http://ziriboxemo.epizy.com/bingo_games_offline_apk.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_off0000de7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7A 5696 bytes
SHA-256: 59b596dfe31165cd840110827813a86b68322ef6768195d3a2da47f87a872058
font_01_sfnt_off0000f1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C0 10508 bytes
SHA-256: 9083d48d95308dbdffca643be639d87987c15270cd9ce2463eabad07b1f2025e

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