Malicious PDF — malware analysis report

Static analysis result for SHA-256 261cd595346a3772…

MALICIOUS

PDF

81.2 KB Created: 2021-02-23 01:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 40c080f87c46ae12988c8b4a75767ecb SHA-1: 099ed15173b1d2510ce9c1a51f1439077e97947b SHA-256: 261cd595346a3772eef6c3f26b1a6ff2da58ae6661ec925fe2feaac6400a7a99
196 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
  • 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.
  • 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://baarspo.ru/wix?keyword=virgo+man+capricorn+woman+yahoo+answers PDF link annotation
    • https://cdn.sqhk.co/mujexoxa/jjghjeV/shadow_fight_2_special_edition_apk_download_hack.pdfIn PDF document text
    • https://bevibobozile.weebly.com/uploads/1/3/4/7/134700853/mufubalizoziju.pdfIn PDF document text
    • https://kigilejujagenit.weebly.com/uploads/1/3/1/4/131438309/kibakuzaxabado.pdfIn PDF document text
    • https://wujupeduluruwuv.weebly.com/uploads/1/3/5/3/135316277/xagimejomiderebo.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefima/ivahgif/zombie_city_defense_apk_mod.pdfIn PDF document text
    • http://rekabiwuxu.22web.org/bafovet.pdfIn PDF document text
    • https://fawewetipe.weebly.com/uploads/1/3/1/3/131379545/9902448.pdfIn PDF document text
    • https://voropulunonuz.weebly.com/uploads/1/3/5/3/135316946/1226134.pdfIn PDF document text
    • https://cdn.sqhk.co/zatufora/jcic4jC/wewojojukomifojumeji.pdfIn PDF document text
    • https://lanufirosonez.weebly.com/uploads/1/3/4/7/134704233/822bb7a2c0b8cb.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/Khejdje/73059006412.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/zatasipezeg/zix_archiver_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/woman_yelling_at_cat_meme_blank_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/51889336494.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/has_the_amber_spyglass_been_filmed.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/moxabebem.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/basic_website_html_code_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/gapijofiwubezorogizu.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_off0000f5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BE 5476 bytes
SHA-256: cba35def62274cf72926aab19fdfb0c21baed569a98b29ce10cb36b8fcfd2a0c
font_01_sfnt_off00010850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10850 15176 bytes
SHA-256: bcccef7a9a06bc3febf2bd92f1d34a5f9e906527a909026932c62aa69f36f061