Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa6baead7bb5bed6…

MALICIOUS

PDF

75.4 KB Created: 2021-01-26 02:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 31a6efa8bb3b298843e86a67d916d5c4 SHA-1: b0735ddb108dba572f6000c103d942d03da25b5e SHA-256: aa6baead7bb5bed60bb5b7bc72aba9877615c540626c28e2280d42cb938b289d
136 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
  • 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.
  • 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://bologen.ru/aws?utm_term=all+tumblr+likes+mac PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5ffdf0ccc5a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_600af258a7dbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471691/normal_5febbf2a6d8b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402933/normal_5ff4de4887f1b.pdfIn PDF document text
    • http://mkuu.club/great_farm_dog_namesth7n9.pdfIn PDF document text
    • http://bisipatelaloguj.66ghz.com/dus_bahane_remix_song_pagalworld.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423454/normal_5fee144c0005f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5fe4fc7d3acb6.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/jb4ieib/marble_temple_quest_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5fdb203f66016.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fefekug.rf.gd/9485030790.pdfIn PDF document text
    • http://wajalapivibobi.epizy.com/21832036433.pdfIn PDF document text
    • http://dabinuxorolukew.epizy.com/49604460190.pdfIn PDF document text
    • http://xaxidos.epizy.com/cecilia_song_free.pdfIn PDF document text
    • http://mepatizus.epizy.com/texas_reality_check_worksheet.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_off0000e9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AE 5140 bytes
SHA-256: f6bc36e431dd25af0b14edba01389cd26e115d5868b5f94f08e62436a1fb61a4
font_01_sfnt_off0000fb0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0B 11172 bytes
SHA-256: 73f76373de37cd9fda3d1830b20517b5dc489d95bae9b6c3ea93d5bced552427