Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fe9fad7ac06701…

MALICIOUS

PDF

76.5 KB Created: 2021-03-09 15:27:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0512b820488047caf8374cabc419a48c SHA-1: bb38851f13d1730dfcc1175ce883eb6e7c9102ad SHA-256: d9fe9fad7ac06701b8f5790522e5d63f9e0dc77989a02b473964eae541b4d6a4
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malicious download lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/award?keyword=full+marks+practical+skills+in+science+class+9+pdf+download PDF link annotation
    • http://godevibusaxinoj.22web.org/beltronics_vector_955_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/j1geife/1811768669.pdfIn PDF document text
    • http://hdvideo.design/how_do_i_reset_my_binatone_phones9c7x.pdfIn PDF document text
    • http://gayerkan.com/9833228603o1jtn.pdfIn PDF document text
    • http://wabuxon.iblogger.org/business_cards_maker_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tofegejij/hhcUAgj/color_tunnel_run_3.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/ibB9fif/best_paranormal_romance_books_2020_goodreads.pdfIn PDF document text
    • http://finansi-7.online/sword_art_online_alicization_war_of_underworld_episode_16_dub421mr.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/Z3aB6ib/disney_princess_my_fairytale_adventure_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/ieP3gjb/nuwite.pdfIn PDF document text
    • http://easylearning.space/poxalakojefazuek7wh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafugigolemetuk.rf.gd/betway_casino_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1efda875-1eed-41dd-92e6-b9489fe7a9b8/pokaxokerividob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dd862ec-0961-4f76-afd2-1e84b406dca2/tadatadejufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33c87987-d18d-4f37-ba61-da8bde2c81cb/anxiety_worksheets_for_young_adults.pdfIn PDF document text
    • https://fbaba6ab-37cf-477f-82bd-e10a416eccda.filesusr.com/ugd/3c8574_d0e5bc591d22421bad3923e54f137f17.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8049c17-33b9-48cf-b71b-08da547fd8a1/satanic_books_to_avoid.pdfIn PDF document text
    • http://limazajot.rf.gd/how_to_learn_more_about_the_stock_market.pdfIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_fe5c5789a02844eca91100eaed3a8c8c.pdf?index=trueIn PDF document text
    • https://02408c19-b9f6-4996-a596-1d5b7e46c8d3.filesusr.com/ugd/c83fdb_b316d22b86be452b93a3c618b1920e60.pdf?index=trueIn PDF document text
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_9b62687f0ae34087b24f286b406ae6a5.pdf?index=trueIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_73f21e001bd64673af95813e1c2401d7.pdf?index=trueIn 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_off0000ef2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 5568 bytes
SHA-256: 3e5efd9cd9943d19892ea999b1ef3484df22435a618bb20a38c801851e0a12de
font_01_sfnt_off00010213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10213 9992 bytes
SHA-256: ea475c73634b009af1f56bd5378ed57bb1c99cc9a2ff3512c7f0c2b571c19a54