Malicious PDF — malware analysis report

Static analysis result for SHA-256 14084ea50784d158…

MALICIOUS

PDF

95.2 KB Created: 2021-03-12 17:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 21c179cf4db29af9222e055441603b91 SHA-1: a78dca038f9d578b191bd424d94276efc451909c SHA-256: 14084ea50784d158bc07fbad409b137120a5311002a9397de31f3f2c7dc84bf8
126 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
  • 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://resalured.ru/wix?keyword=cvpr+2020+registration PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374976/normal_5fd5f3e798035.pdfIn PDF document text
    • https://gomarevijupa.weebly.com/uploads/1/3/4/5/134585171/vijudowoko.pdfIn PDF document text
    • https://pisubemiduburor.weebly.com/uploads/1/3/1/3/131380627/lusarotegurugesuki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_6032a0eddc567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374857/normal_602ee96ae27d8.pdfIn PDF document text
    • https://relazubaw.weebly.com/uploads/1/3/5/3/135315829/7e8946197.pdfIn PDF document text
    • http://nenonazuf.scienceontheweb.net/795304741.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/kujegotuxifozofewi.pdfIn PDF document text
    • http://nopezimugabotik.mygamesonline.org/certificado_medico_oficial_madrid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484169/normal_5feb8c91e295e.pdfIn PDF document text
    • http://sijubuwejipamun.mywebcommunity.org/pocket_guide_to_apa_style_6th_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384316/normal_5fd861d48a6c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece468ed-0ee1-4846-95f5-d478fd44c1a3/simmons_sd1000_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42167384-8d62-4b56-bbc9-37d625488936/fazato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ce560e-19d2-4f08-a0be-0b17a8b633e9/feruvovotidizorenarogu.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/proteins_biochemistry_and_biotechnology_gary_walsh.pdfIn PDF document text
    • http://danebusuji.onlinewebshop.net/list_of_japanese_nouns.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/91767292640.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_off00013850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13850 5192 bytes
SHA-256: 5cb18dac55d474e5b88e6aca4f9094b179c17154a0acf5f69ff8b17e3be7d4bf
font_01_sfnt_off00014a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A10 11056 bytes
SHA-256: 8eb2c56a0819c88fef428ddf0544cfb2933857e5ee6e0632105d6ac749da4c80