Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62318eb203895e6…

MALICIOUS

PDF

82.4 KB Created: 2021-05-10 20:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 19457bc4530a02ba44aa26ba86067945 SHA-1: d79eb7cce339201a20810c9abc526f93d9c0e293 SHA-256: e62318eb203895e61e2f0aaf3d2b285cb180783a20899b73fa883bf295ae5498
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://crophysi.ru/strik?utm_term=autocad+lt+2020+version PDF link annotation
    • http://zujadise.scienceontheweb.net/how_much_do_medical_examiners_make_a_year.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/CiiVjf9/96834284933.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/APvz6if/57442217274.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/jdgcehb/bad_banks_season_2_episode_6.pdfIn PDF document text
    • http://im-marceting.site/52425057378u7u96.pdfIn PDF document text
    • http://job-finder.space/how_to_put_a_sim_card_in_a_samsung_galaxy_a10e8cowe.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ZmicBjb/fatal_fury_2_special_move_list.pdfIn PDF document text
    • https://cdn.sqhk.co/galemojubemo/gdheEjd/go_kart_running_from_police.pdfIn PDF document text
    • https://cdn.sqhk.co/jegisizozul/L5C7Iij/aegis_solo_user_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/milevatomog/g4XNImg/biwexuxijifuponipimoto.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/d20jaib/meteor_hammer_io_game.pdfIn PDF document text
    • http://zujewubowufonug.scienceontheweb.net/11050307843.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/hNFvDI1/mefofedalomitorakimitipa.pdfIn PDF document text
    • http://medgaj.com/how_to_divide_decimal_numbers_by_10003e0r3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f1357f0b-0b27-4bbf-ae96-67fd8e2a167b/31253958826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/353584e9-3525-453a-94cd-dafd03904be0/dell_inspiron_1720_max_ram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c533b724-2983-4eeb-a56d-6e0595209ac2/tarivagi.pdfIn PDF document text
    • http://rixibedi.onlinewebshop.net/download_any_file_online.pdfIn PDF document text
    • http://dasilumenuf.rf.gd/46680831277.pdfIn PDF document text
    • http://wutorokanotomav.onlinewebshop.net/sujet_brevet_2020_histoire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6938aa-0692-4556-adf5-f9eea135067e/55771248402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759bc4d2-d1c6-42ca-9712-1bb626a89dda/35871944531.pdfIn PDF document text
    • http://wexorasojovi.epizy.com/lurolubiwamamofusegox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20D 5140 bytes
SHA-256: d6bf049ef903d97b0817139615439b6d4fd10a48cd27b87227534d9150699a43
font_01_sfnt_off0001038d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038D 13776 bytes
SHA-256: 66bdd4619e1e53fcbaafa93d906f67df12e78ab42d4f56aea47da6da23db2c2b
font_02_sfnt_off00012c83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C83 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378