Malicious PDF — malware analysis report

Static analysis result for SHA-256 640812e4b3b8eb18…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 19:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 31098e08dcde160a59af410a78cd189a SHA-1: cf590a501cac939df4cea59bcdbc3e33b62c2391 SHA-256: 640812e4b3b8eb18fa880c2577b81ca41a4744bfdd2d16642081b073e986f928
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://golowaki.ru/award?keyword=how+to+use+samsung+remote+tv PDF link annotation
    • https://cdn.sqhk.co/nufesewepi/ciaV0Im/free_stuff_near_me_on_my_birthday.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/Mgicfjj/86370429613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_60120b3c35b0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443823/normal_602af348a7665.pdfIn PDF document text
    • http://zotaravaka.22web.org/photoshop_actions_pack_free.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/miawDjg/line_driver_encoder_wiring.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/UQKG1jc/bididon.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/hiVXgil/dejibuwowajojari.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_6025a245f2ebb.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/cZjjnK8/naripitovimurapari.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/j5lhhbw/85083382499.pdfIn PDF document text
    • http://fopasezexelori.iblogger.org/87369722648.pdfIn PDF document text
    • https://cdn.sqhk.co/banuluwopote/jdhiIiV/funny_dog_running_in_his_sleep.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/gdEnKjc/devufotitunu.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/udknthg/ugly_christmas_sweater_run_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fakexebubigej.rf.gd/consumer_reports_washer_dryer_combo.pdfIn PDF document text
    • http://megokog.epizy.com/gipikexugin.pdfIn PDF document text
    • http://tepoguko.epizy.com/lonavavoxobog.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_off0000e0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C0 5084 bytes
SHA-256: e13f29cbb69e68ad921943d1ad4d42d14a5da971b16a9167e219b92e046c3905
font_01_sfnt_off0000f20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20E 10476 bytes
SHA-256: ab439ec0beb4eaf8e960f2d94fed38ee0104c2974a0fdabbce1506606b63e177