Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf63c0f8f6a65b18…

MALICIOUS

PDF

120.4 KB Created: 2021-03-06 17:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 46fb7d996fbcb2f31d615fdfa76d2505 SHA-1: dc87bfc393689016c94ddd5d8966e75135246a61 SHA-256: bf63c0f8f6a65b185f07f2761f4499759ea8a51dfe6d86468c52271eb94dd038
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on 'https://bologen.ru/wix?keyword=pokemon+emerald+all+tms+hms+cheat'. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

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://bologen.ru/wix?keyword=pokemon+emerald+all+tms+hms+cheat PDF link annotation
    • http://raicen.com/najinegefbezf7.pdfIn PDF document text
    • http://zhigina.ru/service_tool_v3400e58po.pdfIn PDF document text
    • http://jakesubinosol.scienceontheweb.net/medical_spanish_book.pdfIn PDF document text
    • https://cdn.sqhk.co/tatogevi/NDHjcav/black_screen_background_for_zoom.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/X9hjgjw/talisman_game_board.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/ZLPjfCs/hearts_card_game_download_for_windows_7.pdfIn PDF document text
    • http://melowimaz.getenjoyment.net/79247517399.pdfIn PDF document text
    • http://idealslimitaly-official.site/1217078546343heu.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/dell_optiplex_755_power_supply_upgradevzy55.pdfIn PDF document text
    • http://tehnoprom.org/96571557673jzrxc.pdfIn PDF document text
    • http://worabipupe.mypressonline.com/what_does_a_river_runs_through_it_mean.pdfIn PDF document text
    • http://larokamexi.sportsontheweb.net/is_it_not_written_in_the_book_of_jasher.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/ghlWIhj/ultimate_to_do_list_ios.pdfIn PDF document text
    • http://tapagigozi.medianewsonline.com/dagewa.pdfIn PDF document text
    • http://pekibimige.mygamesonline.org/what_size_tires_go_on_a_2009_toyota_corolla.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikaderobiw.atwebpages.com/51662210343.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/android_9_samsung_note_8_split_screen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c04f0a1-c39b-49ef-958b-ed390e7077b9/personality_types_in_order_of_rarity.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/87679452947.pdfIn PDF document text
    • http://jozilaro.atwebpages.com/vojapazelojunijufozonat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d20010-5ffb-48e7-b1c6-75b68963beae/american_born_chinese_graphic_novel.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 8

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_off0001905c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1905C 5244 bytes
SHA-256: 201b160f18ed07bae411f8aff237866f209e39d18c7619ae853e0102b59121cc
font_01_sfnt_off0001a208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A208 16172 bytes
SHA-256: e2ecd3e1b082832e08595bebeba10cae955f1176345ea2eb29e2f78e39b2b8ad

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