Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d5888978893970…

MALICIOUS

PDF

73.7 KB Created: 2021-03-02 05:04:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 34d000090f782d101ccc30d4607250ff SHA-1: b24cfe0dcf07c5894a2f6d30474fc990963292f2 SHA-256: d0d58889788939701b577988738a2123890c24129a82fccade2520ee24263d79
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document body, though heavily obfuscated, contains keywords suggesting a lure related to 'roman household gods word', which redirects to a suspicious URL. The presence of numerous external URIs, many hosted on disposable domains or link farms, further supports a malicious intent to redirect users to potentially harmful content.

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://nipisod.ru/wix?keyword=roman+household+gods+word PDF link annotation
    • https://cdn.sqhk.co/forinabam/KjaChdr/xamubatirojuzexi.pdfIn PDF document text
    • https://cdn.sqhk.co/gejixoneku/W8jeJFj/chikungunya_infection_symptoms.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/the_casebook_of_sherlock_holmes_book_review.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/bi6qgem/relexubufefubif.pdfIn PDF document text
    • http://info-pages.ru/3760908159342uqv.pdfIn PDF document text
    • https://cdn.sqhk.co/kimamena/gbhhGKz/crossfire_sports_car_price.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/kundalini_yoga_books_in_telugu.pdfIn PDF document text
    • http://hookup154.site/angry_birds_star_wars_apk_ios6xi9x.pdfIn PDF document text
    • http://numberoone.xyz/zufisupezoxasefaraguvmeam6.pdfIn PDF document text
    • https://cdn.sqhk.co/zifegowuf/CNhfih7/denivowezawogabe.pdfIn PDF document text
    • http://titanovyi-filtr.ru/yandere_sim_download_apkaylex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zamuriza/46885816870.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/historias_del_cementerio_de_la_recoleta.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/ocean_eyes_piano_sheet_music_with_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/fabubefesabosabaxife.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/94808809534.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 7

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_off0000e5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 5336 bytes
SHA-256: 20708a34097f9255d76e5180c99bbddb6059faef17f52299d64e47977b5bb1f3
font_01_sfnt_off0000f7d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D0 10052 bytes
SHA-256: cace6fcda2ceba0396857ac8ad2b20ec3376b40ee5849186d1bf51756bb64055

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