Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17ecd9eadb3f343…

MALICIOUS

PDF

45.5 KB Created: 2020-10-26 14:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 683d5c46e95c1c235c0e04d563e7d027 SHA-1: 5368e5767a0675c0d60af0c2d3e86723f0aa2741 SHA-256: f17ecd9eadb3f343a5cfb1315110b7639784f6551b57af447a26836496565aad
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/aws?keyword=abbyy+pdf+reader+free+download In PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/2464271.pdfIn PDF document text
    • https://dumejolizaxoko.weebly.com/uploads/1/3/0/8/130814858/givetadimazogu-nowotor-lirewami.pdfIn PDF document text
    • https://zegimobigew.weebly.com/uploads/1/3/4/3/134313375/2897488.pdfIn PDF document text
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/36398cd27d8a6e.pdfIn PDF document text
    • https://jafumusatezod.weebly.com/uploads/1/3/4/4/134485233/1735796.pdfIn PDF document text
    • https://jugoruzaja.weebly.com/uploads/1/3/1/4/131407370/wudixepumaxun.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/junubozuke_vizipofu_jaxiboxovugur.pdfIn PDF document text
    • https://porimejonawi.weebly.com/uploads/1/3/4/3/134368737/vodibujejo.pdfIn PDF document text
    • https://fimozafovobas.weebly.com/uploads/1/3/2/7/132741130/6407459.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/jedewadizuzogez_supoxatarisi_kisoxafonopetes_zesikerurug.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/03502f821f8ee.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/zoxux.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/36305a.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/4765241.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/bexuludokemasi-gejite-jitedawozo.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/e5d13d1eabae7dc.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/vekivusoxifix.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/3223528.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/gonumuxilalap_kupepe.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007332.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007332.bin)
    • https://uploads.strikinglycdn.com/files/b50ea726-3703-4a7a-a9ef-c7e85ebd1afd/fupavaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e3fd1b3-60f2-4a25-832a-c866c0e1ee67/xuzopewekoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9abfef86-1cbd-4a40-996b-f47b5eb10992/teforumadadorelepimasal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d9f53f4-2b87-45d0-9f9b-20ca9ea5ac6b/the_american_promise_volume_2_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/janigusebidasodogodukodox.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/91551216148.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/deepika_malayalam_calendar_2019_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/autonomous_research_blockchain.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/currency_trading_for_dummies_1st_edition.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 extracted file (font_00_sfnt_off00007332.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7332 5180 bytes
SHA-256: f2f7971cca7637aa577849a9a6c400d8a5d54f69397e2ffe7388dc1c4d512730
font_01_sfnt_off000084f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F1 10436 bytes
SHA-256: c1d82f542cbc03eab32579caf6f68d4de6fd8885959ade30fbafc39412bb1020