Malicious PDF — malware analysis report

Static analysis result for SHA-256 590b25c4156ffde8…

MALICIOUS

PDF

65.6 KB Created: 2021-02-19 13:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1f9acc542546577c49bb7a3fbd81e492 SHA-1: be622353520bdf39c56a4a9d7ec5368fb2e2d96a SHA-256: 590b25c4156ffde818de185059967374db193cde8a87df68ccce3545b0b3d3c6
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=sub%20zero%20532%20ice%20maker%20manual In PDF document text
    • http://itwow.info/successful_coaching_4th_edition_free2g1y1.pdfIn PDF document text
    • http://repair-foto.ru/17828946488jcekc.pdfIn PDF document text
    • https://jofanota.weebly.com/uploads/1/3/2/3/132302765/7dfb36088d7c91.pdfIn PDF document text
    • https://dopapebo.weebly.com/uploads/1/3/4/8/134870178/robimugosab.pdfIn PDF document text
    • https://defelidiko.weebly.com/uploads/1/3/1/0/131070982/1299792.pdfIn PDF document text
    • https://gawudizilox.weebly.com/uploads/1/3/5/3/135300959/koweguzaj.pdfIn PDF document text
    • https://jefabulovonaju.weebly.com/uploads/1/3/1/4/131438419/a567270.pdfIn PDF document text
    • http://tryraisins.pro/xuzodopamobed28j.pdfIn PDF document text
    • https://sukodijam.weebly.com/uploads/1/3/4/5/134516983/dupovukatak.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/ehjjeia/rovumipalu.pdfIn PDF document text
    • https://cdn.sqhk.co/vafodagusun/gjUAaZd/lynx_cat_fur_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ZJjfAih/pitevoropawisijal.pdfIn PDF document text
    • https://cdn.sqhk.co/tarekekog/eAgf4us/missing_411_hunters_movie.pdfIn PDF document text
    • https://sulewonabesonu.weebly.com/uploads/1/3/2/6/132682327/wekogoladeb-sapaniraviwi-xatojaw-xigiguwotuvom.pdfIn PDF document text
    • http://geosen.net/61314956549x6sx.pdfIn PDF document text
    • http://gutprod.xyz/fallout_4_porn_modv427l.pdfIn PDF document text
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/7085986.pdfIn PDF document text
    • http://momentshop.website/70308668541kytct.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_off0000c606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC606 5544 bytes
SHA-256: d120dcca704065921467997ce400ee8817223056eb892782d9c2525903504bcb
font_01_sfnt_off0000d8d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D8 9556 bytes
SHA-256: cecc20f0df43977a314d863a8557f73ebcb0426fadbf9dfee6286443bb266bf1

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