Malicious PDF — malware analysis report

Static analysis result for SHA-256 4339193c717affea…

MALICIOUS

PDF

73.6 KB Created: 2021-03-03 19:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c481bf9b4112416edad7bf10bcf168bc SHA-1: 13c03ac043a75e77b2fabfd394beb287b5cab69d SHA-256: 4339193c717affea73affb991b818d3edc6137cf1e0e39ac1bc226b434e92291
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=advanced+general+chemistry+notes+pdf PDF link annotation
    • https://cdn.sqhk.co/libibajuzumu/iijde05/hitman_holla_fight_cortez.pdfIn PDF document text
    • http://neyroskakalka.site/totegazusuwutegana4r3q3.pdfIn PDF document text
    • http://azakalaza5.xyz/how_to_descale_k_eliterzj13.pdfIn PDF document text
    • https://cdn.sqhk.co/jetobatu/n76Ridj/dejosupidovujemubusefif.pdfIn PDF document text
    • http://itwow.info/multiples_carroll_diagram_worksheethpfdj.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/ghbkQje/legions_of_rome_mod.pdfIn PDF document text
    • http://numulul.mygamesonline.org/18975243222.pdfIn PDF document text
    • https://cdn.sqhk.co/lupokuna/xgdhjgj/alienware_area_51_laptop_black_friday.pdfIn PDF document text
    • http://circulyarkadigital.xyz/41588285809wf5tf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420600/normal_5ff0746e32314.pdfIn PDF document text
    • http://reweder.site/can_you_set_a_passcode_for_hidden_photos_on_iphoneslpcf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wajutomagavugaz.epizy.com/xegozebujoxobasaxijexo.pdfIn PDF document text
    • http://gejorefirizo.epizy.com/49998908826.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/simple_arabic_mehndi_designs_images.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/gears_of_war_ultimate_edition_strategy_guide.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_off0000e22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22C 5720 bytes
SHA-256: a4933d91643410cbb31f2c3f6fc7714a05456cc7354509a21b2fe1e3b86b6a3a
font_01_sfnt_off0000f588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF588 10540 bytes
SHA-256: eaa4af9828e7de687969d58bc4afd78cfa8eb3f15395dd7f9b1e7872a1289b94