Malicious PDF — malware analysis report

Static analysis result for SHA-256 f75243aff3540512…

MALICIOUS

PDF

81.8 KB Created: 2021-03-28 21:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7c2613217339422fb2d008a19714175a SHA-1: 118b188b208daa07d73d2d76b86ca9e09a7fc1c1 SHA-256: f75243aff3540512c33fd940e48705b67c3914c9d16f8c74a4de135a43869d72
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://druttle.ru/strik?utm_term=what+month+are+onions+harvested PDF link annotation
    • http://gubixazolela.sportsontheweb.net/resumen_de_la_pelicula_el_camino_del_guerrero.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/goviwutemafutiluvot.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/brother_xl2600i_needle_position.pdfIn PDF document text
    • http://wimudevereru.sportsontheweb.net/25319309295.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/gezililik.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/alter_ego_a2_plus_vk.pdfIn PDF document text
    • http://noxetoporobosek.sportsontheweb.net/26324136227.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://movuzawizigevej.myartsonline.com/kolawikalimeg.pdfIn PDF document text
    • http://gasigigi.rf.gd/72676957571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3638b2e5-1b8a-47cc-903d-e1b1025993ad/78297997296.pdfIn PDF document text
    • http://tijekozevapika.epizy.com/bixidorafag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6ab77ed-b8f6-45db-8694-d7b9820d4463/lotuseterigunilajemu.pdfIn PDF document text
    • http://kesugoda.rf.gd/tp-link_tl-mr3020_price_in_bangladesh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc23ffe-e662-4288-aeac-6f62b5d66aec/kyocera_duraxtp_e4281_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80dbaac4-5e33-4f7b-822d-a0ea444d1906/lagezagal.pdfIn PDF document text
    • http://xekazaz.myartsonline.com/filatijusitolodirul.pdfIn PDF document text
    • http://nelozud.epizy.com/mapa_do_brasil_estados_em.pdfIn PDF document text
    • http://felawikemuda.epizy.com/64054442326.pdfIn PDF document text
    • http://dawefegoboxe.rf.gd/statistics_and_probability_with_applications_answers.pdfIn PDF document text
    • http://fetufebutegiv.rf.gd/fokekizalakevokamegaf.pdfIn PDF document text
    • http://gezixus.myartsonline.com/doweleti.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 5104 bytes
SHA-256: 513ba4988b2b55fa5cf3ff5fbdff9f8a28f38c07ed3c260b99b8abbba0766ff2
font_01_sfnt_off0001138d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138D 11280 bytes
SHA-256: 8f551de9a6137bc21dbffd28f1474f8d1cca0bbdd7dc8c9c80950c5937713ac7

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