Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b306098fd7f214b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-18 22:01:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 939cdcbd5d94ff81b7a93fdcb3aa9a62 SHA-1: 74d41687f16cf205cc249bad5cb75c7b0cc41abf SHA-256: 7b306098fd7f214b9e998b7a0bf00c278caacbecef54933250430258072680f3
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jottigo.ru/wix?keyword=k12+cengage+answers PDF link annotation
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/2893729.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/vhf5ljc/fear_the_walking_dead_season_3_episode_11.pdfIn PDF document text
    • https://xirejefeju.weebly.com/uploads/1/3/4/7/134723985/botufalabel.pdfIn PDF document text
    • http://good-production11.site/venous_malformation_radiopaediavljmm.pdfIn PDF document text
    • http://erogan-columbia.site/teoria_de_los_3_circulos3iscn.pdfIn PDF document text
    • https://guvefivilemu.weebly.com/uploads/1/3/4/3/134397682/zodulitagesoseji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388428/normal_5fe44aa0c570b.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/fgiAwtE/2020_movies_box_office_collection_list.pdfIn PDF document text
    • https://ronenajawewaxiw.weebly.com/uploads/1/3/4/5/134594127/3938963.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475872/normal_5feec52c5ada3.pdfIn PDF document text
    • https://ripumunilemaz.weebly.com/uploads/1/3/5/3/135302863/xizesexaxugufawu.pdfIn PDF document text
    • https://zitavuzan.weebly.com/uploads/1/3/1/3/131379524/wijunaf_wenajona_nijekiven_zedutikipibe.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/isjdam7/soluruwo.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/Fihiagf/74094708639.pdfIn PDF document text
    • http://meetdouche.xyz/physical_and_cognitive_development_in_adolescence6etvw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367938/normal_5ff1bdc325078.pdfIn PDF document text
    • http://lngcliente.com/suwanidotomi4qryb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petetilazuji.epizy.com/samsung_dmt800rhs_filter_cleaning.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_off0000d68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68B 5180 bytes
SHA-256: 3701abeb776b9a917c1312eabcd9511e23ea79195ea88fdfe5556943b5a29d91
font_01_sfnt_off0000e85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85C 10652 bytes
SHA-256: a0ecdb4196abb3fb54e48e943c0a6c8244da0aa3f7e934ecb1fdbf36b71c60a1

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