Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7774c6eeef659e…

MALICIOUS

PDF

67.9 KB Created: 2021-02-19 23:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 189110f3ab1b9ad968a04ca1c8db3389 SHA-1: 83d70783cbd0ff6c59d69af650f2bf48b138c888 SHA-256: ee7774c6eeef659e011d5abb0c7c594940a4ec3128da2d2c07476b37a7931442
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=poesias+para+gael In PDF document text
    • https://nikudedixipapun.weebly.com/uploads/1/3/4/6/134692686/vinakomusipu-tesisa-kijugigojupog-jumuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/gZnhcwK/minecraft_exploration_mods_1._12._2.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/jdfqijm/gubefalirulinotilemosoz.pdfIn PDF document text
    • https://lazofakivew.weebly.com/uploads/1/3/1/4/131406449/xetadulezawol_puwozegaku.pdfIn PDF document text
    • https://cdn.sqhk.co/zanudiwageg/EjfYbia/zizagunej.pdfIn PDF document text
    • https://tixuxajus.weebly.com/uploads/1/3/2/6/132682254/zareseniwose.pdfIn PDF document text
    • https://tegidaweriwasul.weebly.com/uploads/1/3/1/4/131483440/vaxatabuso.pdfIn PDF document text
    • https://sozogamawi.weebly.com/uploads/1/3/1/6/131636736/728d4e46.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/emVGOUq/jetboat_extreme_gold_coast.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/Mrjihf0/spacex_demo-_1_crew_dragon_docking_to_iss.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/dinisemowoge/jikam.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/lapidoz.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/hello_bixby_apk_android_6._0._1.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/xazeredesiboxive.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_off0000cbfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFD 4988 bytes
SHA-256: 91bb8e68cbbec8ee7b8725dbf6fa52cb6051f5664f29ba8538bd4f0ebdbfcce5
font_01_sfnt_off0000dd05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD05 12036 bytes
SHA-256: a045a713c5d13ba6f4aef4aa72bb385a0b96643b4a03ff2fc2d3c87fc1b4813c

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