Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47e3dd0c2e67f08…

MALICIOUS

PDF

128.3 KB Created: 2021-03-22 12:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 45fd6a7291f35eb16fadfe82aa967ac9 SHA-1: 4932603d35da74ca9044f6358f65fe33ede3744b SHA-256: d47e3dd0c2e67f08fbccbffba195d476448591cd9687e96ec9466346bc86ee93
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to suspicious domains like 'ponafet.ru' and 'magazinrf.xyz'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. No scripts were extracted, but the overall structure and URL distribution suggest a link-farming or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/award?keyword=almost+is+never+enough+piano+chords+pdf PDF link annotation
    • http://magazinrf.xyz/is_dorian_grey_a_real_personlcomy.pdfIn PDF document text
    • https://gifuroromila.weebly.com/uploads/1/3/4/3/134377961/mokopedijidapo.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/ez57jfh/sudutukosenok.pdfIn PDF document text
    • http://joy-todays.online/wukojobuwer16d90.pdfIn PDF document text
    • https://jubipolofolexi.weebly.com/uploads/1/3/2/3/132302872/2689184.pdfIn PDF document text
    • http://samettemiz.xyz/what_qualifications_do_you_need_to_be_a_first_responderc4xqu.pdfIn PDF document text
    • https://nojesinas.weebly.com/uploads/1/3/0/9/130969722/tavido_varubi_liloxulinonakus_zojetidoru.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/R9hbzJf/peppermint_chocolate_cake_cooking_classy.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/oiecWRZ/combo_critters_apk_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dbc5f59-348c-47d4-87e2-27a9aeb2631f/37774240823.pdfIn PDF document text
    • https://86042ffc-9b62-460b-8552-fb2522205a17.filesusr.com/ugd/4f92c1_5e2fee2b8ad2486085c46a71564a8f18.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/julaxel/how_to_reset_whirlpool_cabrio_dryer.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/bupeputupewavokatoreriro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8cb71c-ab53-4d00-819d-73c96cf5358a/my_microsoft_bluetooth_mouse_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b10606-ee45-4a29-bb6c-b487056a6e3f/willy_wonka_and_the_chocolate_factory_tunnel_scene_images.pdfIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_150191e143c141dfb40ba44115876c16.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/is_jumping_jacks_a_good_exercise_to_lose_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3998a72b-5ca2-42de-b734-a4318f62d699/zofejininanosudetexek.pdfIn PDF document text
    • https://3c86e5df-9a55-47dd-9d5b-c207b25ec6cd.filesusr.com/ugd/72bf36_a97f5157c17e474e8836384d475db870.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kosamupim/99027494528.pdfIn PDF document text
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_9275a0e90bf64f328039fa3937b15332.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B76 5620 bytes
SHA-256: 7153252f2127d4267c9d34a63c3a6e107afb6e59d242f3ed81656bbcf7890e8c
font_01_sfnt_off0001ae6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE6B 16012 bytes
SHA-256: 19c94fb638099e6f142853da4b18e49a4701864e3d38f39275d830a996a8290d
font_02_sfnt_off0001ddf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DDF7 16120 bytes
SHA-256: 46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12