Malicious PDF — malware analysis report

Static analysis result for SHA-256 534d2bebc94519b1…

MALICIOUS

PDF

73.2 KB Created: 2021-03-04 23:38:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c9c79d4e67e7c1782aa7ecb9639f3ee8 SHA-1: 0c1cd2f04141c69d99ce7cf70c3f5c0029144ce6 SHA-256: 534d2bebc94519b193830cef4dfd02b0a8d0c9596ae6f021952c5774076a0257
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=area+between+two+curves+worksheet+with+answers PDF link annotation
    • http://novedexezenel.66ghz.com/68431628321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372376/normal_602806dc0c600.pdfIn PDF document text
    • https://cdn.sqhk.co/wazotifuk/gYT5dQT/tokaido_shinkansen_seat_map.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/RKk1lFy/77168658374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_5fdafb023e457.pdfIn PDF document text
    • http://gakowog.iblogger.org/11808315147.pdfIn PDF document text
    • https://cdn.sqhk.co/fexivijemozu/sgdhfYU/pufun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447276/normal_5ffd0df218368.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/icHOjHs/85929474372.pdfIn PDF document text
    • http://buporakowun.22web.org/12707448531.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_6021a34ee881f.pdfIn PDF document text
    • https://cdn.sqhk.co/dufimogemeka/hjjghjc/different_words_to_say_magic.pdfIn PDF document text
    • https://cdn.sqhk.co/tijanukubo/fhcjihc/37027860905.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/asNja5C/giocare_a_poker_texas_hold_em_online_gratis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wutewak.rf.gd/documentos_para_contrato_de_arrendamiento.pdfIn PDF document text
    • http://sugosabogakeg.rf.gd/83781941547.pdfIn PDF document text
    • http://zafovitunopejus.epizy.com/creative_cloud_offline.pdfIn PDF document text
    • http://pugomifo.epizy.com/82682227196.pdfIn PDF document text
    • http://fewetero.epizy.com/best_tricks_for_quantitative_aptitude.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_off0000e2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D0 5200 bytes
SHA-256: 35940bde53b64f7d1973d0d278c02251e12ee3561f74d2c03c3f88b901d3f247
font_01_sfnt_off0000f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 10200 bytes
SHA-256: 0f488ace61c5ba973837a68b31028c7a5bce810a3f02af989691d3d153b312fa