Malicious PDF — malware analysis report

Static analysis result for SHA-256 115b15177506bd39…

MALICIOUS

PDF

70.6 KB Created: 2021-02-20 13:41:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6d7ba5e77af11620836b561bcad01c17 SHA-1: 7b9ba50f6e2a157423c211b776646d515c4d5339 SHA-256: 115b15177506bd3916bc5d9af4fa28f37f1637f5dae787ae672b61110cf1524a
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a Verizon internet router support page. This indicates a phishing attempt designed to trick users into visiting a compromised site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://crophysi.ru/strik?utm_term=verizon+internet+router+support In PDF document text
    • https://cdn.sqhk.co/xajamenujo/jut6Wau/82364315660.pdfIn PDF document text
    • https://cdn.sqhk.co/feziwetesene/gcLSqda/83417589431.pdfIn PDF document text
    • http://xajoraxi.22web.org/47627371011.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/hjbUvXD/4401396446.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/c7AricQ/bekhayali_lyrics_video_song_download_for_whatsapp_status.pdfIn PDF document text
    • https://cdn.sqhk.co/gorisaburo/ieicjgE/bubble_boy_poker_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/IcXhjFN/62839552633.pdfIn PDF document text
    • https://cdn.sqhk.co/tonuviwa/ibqhaum/60550094183.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/dobesogum/apostrophe_sentences_worksheet.pdfIn PDF document text
    • http://tiworetaganufo.epizy.com/geometry_angle_addition_postulate_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/tafogeveludumuwubitegosup.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/update_facebook_on_android_tablet.pdfIn PDF document text
    • http://dezazikep.epizy.com/55005340369.pdfIn PDF document text
    • http://lipesomidu.epizy.com/bassam_tibi.pdfIn PDF document text
    • http://zumijuxuv.epizy.com/dakelojisizoxa.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/79485459361.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_off0000d991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD991 4588 bytes
SHA-256: 8bccf915382070f6e639f06c11ea4dcff6420b7ac4d215194321aa9b27c12f4e
font_01_sfnt_off0000e948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE948 10624 bytes
SHA-256: ce7e3a1c79be9a13063d45f29c86819863761fea60ccde367f9471c20e01ff8f

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