Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7d0ea47d12d8d4…

MALICIOUS

PDF

75.1 KB Created: 2021-04-29 07:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 896c828097f590d00aa6ee101e03211d SHA-1: a92d53c61856d458bee67ef605a9175ac2fb332b SHA-256: dd7d0ea47d12d8d423e1fbaa60eeea3f1db7caea2ed1d05bafc9c469f86ccbab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to a book title, intended to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=la+ciudad+y+los+perros+mario+vargas+llosa+argumento PDF link annotation
    • http://woxijakuzadajew.getenjoyment.net/cooks_professional_italian_espresso_coffee_machine_instructions.pdfIn PDF document text
    • https://cdn.sqhk.co/xogatijixe/hjgjhja/jujolibizigakofodo.pdfIn PDF document text
    • http://spindlndou.space/xbox_one_wireless_controller_adapter_for_windows_7xnnm3.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/trigonometric_ratios_word_problems_worksheet_doc.pdfIn PDF document text
    • https://wudufedowuton.weebly.com/uploads/1/3/2/8/132815791/tafetif.pdfIn PDF document text
    • https://kowenijog.weebly.com/uploads/1/3/4/0/134096242/molodukoduduko.pdfIn PDF document text
    • https://cdn.sqhk.co/netomivoku/c0ijhes/bedugazem.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/2565480.pdfIn PDF document text
    • http://belkwigs.com/2324063099786w0m.pdfIn PDF document text
    • https://cdn.sqhk.co/kizofapekeku/EgQhdig/democracy_white_jeans_ab_solution.pdfIn PDF document text
    • http://jinobuzid.scienceontheweb.net/67941269690.pdfIn PDF document text
    • https://cdn.sqhk.co/pimupigedu/bSZghhn/perijutizakaz.pdfIn PDF document text
    • http://ulekschool.online/night_shift_song_jon_pardi_lyricssnell.pdfIn PDF document text
    • http://testertumentum.space/fonowawexejupjwnmf.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/hbibhgc/87528995614.pdfIn PDF document text
    • https://ziralupaw.weebly.com/uploads/1/3/1/3/131379221/5908077.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pejemevogoge.myartsonline.com/11199538230.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/60116924495.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/4578082222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b6cb1d-4df7-4eed-985e-b5a3933cb29b/qu_puedo_cenar_saludablemente.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/872a1633-db86-4b40-b331-8436e449a278/dewalt_12_volt_lithium_ion_cordless_drill.pdfIn PDF document text
    • http://xologikaju.atwebpages.com/the_secret_life_of_the_american_teenager_cast_betty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/939e54b2-cda8-4b56-a78b-042977aad60d/diary_of_a_wimpy_kid_full_movie_free_online_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d35dd24-6ed4-4b3a-902c-39501d3a9dfc/80353057768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac469bc3-d6b6-4a91-b60c-3eb17b59456a/when_stress_concentration_factor_is_ignored.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_off0000e59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59E 5496 bytes
SHA-256: 25370e209a523c6e2e235382d8051140e900e15ced121e801e5b43409ed9e78e
font_01_sfnt_off0000f84b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84B 11192 bytes
SHA-256: c1481899f59abe6e0326173fa12ec621cc18bb8a19d124f1f245e567c90b88fc