Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4df0cd2ae50c89…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 04:48:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 581108042f3ee21e8e3953b5fd555301 SHA-1: 7bfc718967b200677e504f75ee25cc5ed2913020 SHA-256: aa4df0cd2ae50c89cdd597d5995d75bd65121e8069d7d9f4ef4f5293043e88da
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/award?keyword=aqueous+kcl+conduct+electricity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455196/normal_602e4d820bf98.pdfIn PDF document text
    • http://brettlockhart.com/we_wait_upon_the_lord_lyricshydj2.pdfIn PDF document text
    • http://raftgjgr.space/dog_temperament_test_formptesj.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/gcCAhCt/26449741596.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/5K2Cb05/poopsie_slime_unicorn_horn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494451/normal_6032747135dfd.pdfIn PDF document text
    • http://samoe-samaya.ru/anarkali_of_aarah_moviepkzt6.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/hqLgjgh/58929744444.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/bhggghj/83070502940.pdfIn PDF document text
    • https://cdn.sqhk.co/dogilijesiwu/bib2thh/91346128207.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/XyqheKk/oxygen_atomic_number.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/hdticji/giretawi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375514/normal_5feccd6569bff.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/idifrwM/detabesofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kakasis.onlinewebshop.net/rozufavimadogoxelir.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/zarugafa.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/zewobilipoduvaxewubuwugul.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/vijane.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/kiligezarubeb.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/1990941348.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD091 4884 bytes
SHA-256: 3fece853a8245067c883882534366a5e1f932f1f36c6bf4fd0aa196fad0453c0
font_01_sfnt_off0000e13e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13E 10164 bytes
SHA-256: 0b203593fcc31375b06341917ebc5fdf81d1ca706c3fbea20138232f00c407f1
font_02_sfnt_off000103f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F9 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34