Malicious PDF — malware analysis report

Static analysis result for SHA-256 690ce77d640a32a5…

MALICIOUS

PDF

72.8 KB Created: 2021-01-24 13:12:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f83ce32021d3073771046eeaaffe75fd SHA-1: 86d6a563115690a8d6d0ffdd7d32177571435876 SHA-256: 690ce77d640a32a52e661ac581724b6fbb07316c14972177745366344b08ba12
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to malicious redirector infrastructure and a high ML score. The embedded URL, 'https://yafferge.ru/aws?utm_term=alia+bhatt+songs+video', is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

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://yafferge.ru/aws?utm_term=alia+bhatt+songs+video In PDF document text
    • https://static.s123-cdn-static.com/uploads/4471985/normal_5ff8d82c4854c.pdfIn PDF document text
    • http://nicechange.space/stick_zombie_arena_49l65c.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/1NfUrPb/49286843606.pdfIn PDF document text
    • http://gramnews.xyz/kugufafoketi4rpuq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491688/normal_5fe12b64ac82c.pdfIn PDF document text
    • http://tiktoktop.design/pinball_flipper_cabinet_protectorswucxw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449402/normal_5fd3970209ce7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371553/normal_5ff9e8baf0231.pdfIn PDF document text
    • https://cdn.sqhk.co/fazovivum/Ojlgthj/phone_electricity_live_wallpaper_free_wallpapers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5ffabd5fbb825.pdfIn PDF document text
    • https://cdn.sqhk.co/befulirawid/eWVYYif/80557706053.pdfIn PDF document text
    • http://atlas-copco.su/nanup2vmg4.pdfIn PDF document text
    • http://megantv.site/57508826182g62j9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410722/normal_5fe35713b9dd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455403/normal_5fdebd7b13b2a.pdfIn PDF document text
    • http://winoorama.website/talomirizevinufemufojixvbeve.pdfIn PDF document text
    • http://evakuator-uga.ru/disable_lock_screen_password_huaweixj7db.pdfIn PDF document text
    • https://cdn.sqhk.co/volotedi/hjfgjtV/94135533218.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3C 5180 bytes
SHA-256: f10984cd99b7b9ffc410285e73d8bf5b473061b7383053c1b65b012289c13eec
font_01_sfnt_off0000efdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDF 11248 bytes
SHA-256: 8c4c5ceb6b1627fb08a6647ef154fb84821affe1890d9796b35a60a083a214a7

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