Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ab3a7780a430ff…

MALICIOUS

PDF

74.2 KB Created: 2021-02-16 09:38:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3379cad0cda8d1839c147bc3b1d45025 SHA-1: 6ee72533c4d9e1f7cc808f5cfc1cbe0aa5d8a2c8 SHA-256: 83ab3a7780a430ff6b0bcd2d87de4c0757ebea36cc7d9bec31d4537b68dbf45f
186 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.
  • 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://maypoin.ru/aws?utm_term=cara+setting+d-link+dir-615+sebagai+access+point PDF link annotation
    • https://wewowalowumuv.weebly.com/uploads/1/3/4/0/134040384/judan-komidunasafesir-bevuxuxemot-bamame.pdfIn PDF document text
    • https://xozipirun.weebly.com/uploads/1/3/5/3/135324749/fagilipoboseba_numubuvopabibot.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/jjoSXjg/19059814812.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_6029af6fccd2b.pdfIn PDF document text
    • http://hytri.com/dojidajo6ohu5.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/aLfeJhe/bewaniponixezurojoga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428335/normal_602b426023522.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/gihjigR/67159519883.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiren/hsSvfGR/cool_ringtones_for_android_phones.pdfIn PDF document text
    • http://blue-tick-central.com/2911530183511din.pdfIn PDF document text
    • http://aycotoro5.xyz/subramanya_ashtothram_english61m33.pdfIn PDF document text
    • http://cardioactiveufficiale.site/nuvedepuwofsgsdk.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/sefabe/estimating_mixed_numbers_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/37447342013.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/nipavigagukawivexutuw.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_off0000e4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C5 5712 bytes
SHA-256: 4aba81858038719fd7a07e3cf7c52af2f7e7338ef105a568f904633f2d65e844
font_01_sfnt_off0000f84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84F 10304 bytes
SHA-256: 18f767aff9e1473bba72ba0bbddf59d51a6c0b5aade4a64bb9d04aa11fe4c2d4