Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb487b7a7b70d24e…

MALICIOUS

PDF

72.1 KB Created: 2021-02-24 10:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2cc69ac238e14c4122c270f0151ea4fc SHA-1: eb29935e2ce9b8f71b3f1fd9ba941e6125e42567 SHA-256: fb487b7a7b70d24e967d02a3d9dd11afe5a1ed188382ab3b8079da709e1b1657
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=true+skate+hack+apk+all+skateparks PDF link annotation
    • https://cdn.sqhk.co/punipopi/1jbjaig/xinusugutikavilasul.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/iaqQ3ia/3991562241.pdfIn PDF document text
    • https://cdn.sqhk.co/bikezuku/T75jfVD/life_is_strange_comic.pdfIn PDF document text
    • https://jogotipopawufi.weebly.com/uploads/1/3/0/7/130740597/2a69c69a82279.pdfIn PDF document text
    • http://kihepc.xyz/18953307142okukb.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/xigh4gi/construction_project_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/ic8jaQG/cheats_for_minecraft_dungeons_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/nakotuba/jccqOF5/dominos_near_me_delivery_phone_number_please.pdfIn PDF document text
    • http://microdigitalmeter.xyz/neural_networks_and_deep_learning_coursera5hxi9.pdfIn PDF document text
    • https://kozenuxifojani.weebly.com/uploads/1/3/4/6/134665776/difeloborapumi_mudogamo_zodesososiruxik.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/umbd4hb/jemelarixujuvujopepa.pdfIn PDF document text
    • http://tehnotop.space/homestead_land_for_sale_in_oregongr0g4.pdfIn PDF document text
    • https://mivebomuponi.weebly.com/uploads/1/3/1/3/131398008/xujejasonugufiri.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/73TEfil/ava_lockscreen_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mezomabesoki/iAghnge/54445515051.pdfIn PDF document text
    • http://changepass.online/zuboloboj5sdz.pdfIn PDF document text
    • https://cdn.sqhk.co/peretudiwi/ijhJhe1/padumimovoxikuzef.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/ygs_soru_bankas_indirivhxa.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_off0000df5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5C 5036 bytes
SHA-256: a073ff5621fca5bd88342a403b3959b765d0ab27af4e7ef9a762b55a3494f69e
font_01_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 10236 bytes
SHA-256: 0aa9d1a847137366d63c68da6f25101ba93a45a80bfd898e8dc69d47952fb151

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