Malicious PDF — malware analysis report

Static analysis result for SHA-256 d007e80e8a49e0fa…

MALICIOUS

PDF

76.1 KB Created: 2021-04-27 10:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 70902d3ee1c543b03eb1cfe97c4d8196 SHA-1: f76d0f27f2943b1475bb64a6377ba09a491bb988 SHA-256: d007e80e8a49e0fae39b3069fc66e3376a0d08f94c2a0e891e6787979e346800
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for a link to known malicious redirector infrastructure. The embedded links, such as 'https://dafemum.ru/strik?utm_term=how+do+you+want+to+live+in+the+future', are designed to lead users to potentially harmful sites. The document's structure and numerous links on disposable hosting suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=how+do+you+want+to+live+in+the+future In PDF document text
    • https://wutowenejeboz.weebly.com/uploads/1/3/4/5/134599911/juvizidoboxaga-xirepupi-xegut-kanuxipoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404953/normal_603412aa62fca.pdfIn PDF document text
    • http://pet-guru.shop/how_to_weighted_average_in_excelnsfs6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_6021291391f3c.pdfIn PDF document text
    • http://antinomi.design/safety_incident_reporting_pptnjjfi.pdfIn PDF document text
    • http://iuts.space/delphi_radio_wiring_diagramn5svj.pdfIn PDF document text
    • http://prognoz-football.club/keurig_k_cup_coffee_maker_bed_bath_and_beyondvjv5n.pdfIn PDF document text
    • https://fixefukazadutux.weebly.com/uploads/1/3/1/6/131607703/9133182.pdfIn PDF document text
    • http://prechambre.xyz/xelejikom5cuny.pdfIn PDF document text
    • http://tizezs.xyz/ohms_law_practice_worksheet_answer_keypfpst.pdfIn PDF document text
    • https://ximetekorexuven.weebly.com/uploads/1/3/4/4/134489871/tolelujirupoxalu.pdfIn PDF document text
    • http://premial.su/how_to_look_at_old_satellite_images_google_mapsp99m6.pdfIn PDF document text
    • https://tipureroxagojox.weebly.com/uploads/1/3/6/0/136096040/kelud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_5fda5c4d00b9f.pdfIn PDF document text
    • https://rofewonopanofav.weebly.com/uploads/1/3/5/3/135312507/xujalorexanajiw.pdfIn PDF document text
    • https://woremudof.weebly.com/uploads/1/3/4/7/134701645/wanatulotusin_mewif_jotovukanun_gopinetowaram.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/0c3ae1a8-9851-4563-889b-9e939ef4c59f/graco_milestone_3_in_1_car_seat_infant_to_toddler_car_seat_gotham.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e139d6-5cf5-4a0b-bab7-dac594d3c87e/how_to_connect_tp_link_extender_using_wps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44f8274f-8f47-4bb2-93c1-59724bc80de3/rejusijakomarotizima.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f887fc6f-4db5-4ebb-855b-66cda5ef937d/gagaxiwekikojewus.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_off0000df18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF18 4916 bytes
SHA-256: 511d3418b8a28f3259e60ffaaa0046a6584f6d1fa7927a46e5012a97972a3a68
font_01_sfnt_off0000efde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDE 10988 bytes
SHA-256: 58b007541940913f72428ae421cc20fc6c124d3ba0a1f36762d19da544288be2
font_02_sfnt_off00011510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11510 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361