Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7651501702d01d8…

MALICIOUS

PDF

63.5 KB Created: 2021-02-22 13:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7e1e0302cc2a1cfe61645003ce3edfa SHA-1: 6fb3d244b0335375943c324279b6e79d6aa30dda SHA-256: c7651501702d01d8c87a7c78a595b732e0320abc775a486b0ec950ee5e67d16c
194 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
  • 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.
  • 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.
  • 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/wix?keyword=a-check+global+drug+test+locations In PDF document text
    • https://cdn.sqhk.co/pewowutefiw/umgjRy8/slap_kings_free_play.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/dOjbiwk/92960717796.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/jhhe3je/janijojud.pdfIn PDF document text
    • http://cleanup-sale.site/are_electrolytes_acidic_or_basichg7ua.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387938/normal_5fde3b0a04439.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/jfTgcja/power_rangers_ninja_steel_fighting_games_download.pdfIn PDF document text
    • http://voyazh-shina.com/wipaxenituvotikazdwxx9.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/6nIiiAN/fafuliluxidunugoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/nagebagem/geiaqjf/outliner_trimmer_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/mevexobuzur/fa1giie/coder_mip_battery.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369640/normal_5febd84216bab.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/RWidCKK/74940980053.pdfIn PDF document text
    • http://reduslim-siteofficial.site/cnet_hp_printer_drivershpput.pdfIn PDF document text
    • https://cdn.sqhk.co/puwupasakej/gfLztjZ/64239561309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_60141b253e310.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_off0000bc51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC51 5424 bytes
SHA-256: dab81c905d4e1896c0220c6c9bce35e40b61a0d59228ae855ac641566c0bbc09
font_01_sfnt_off0000cec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC0 10124 bytes
SHA-256: b33ef6354b8f23cfb3e15e3be67c2dd0f088c18960fab4a6d532fba38ec69772