Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdfad3986b94e9bb…

MALICIOUS

PDF

95.6 KB Created: 2021-03-09 07:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 370d522213d53276702f19fd4d786f61 SHA-1: 9fee2fc28a8460921ae8a08bab8c8a59038c99bf SHA-256: fdfad3986b94e9bbf53a5cfb402c23f50018930b269219a3e0d17ce2a6346669
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojanized document. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest an attempt to trick the user into visiting a compromised or malicious web resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://jumiwimov.ru/award?keyword=subphylum+vertebrata+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369330/normal_5fcc1c732ed7d.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/how_to_use_2_ton_trolley_jack.pdfIn PDF document text
    • https://nixunirebexif.weebly.com/uploads/1/3/0/7/130776125/4e68d77a5d36.pdfIn PDF document text
    • https://kiwiwutirove.weebly.com/uploads/1/3/4/7/134707888/nivefi_mesetujufekoziw_rilinejidokaga_kutosaguzeba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485004/normal_5ff654e32c56e.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/how_to_unlock_lg_tracfone_wireless.pdfIn PDF document text
    • http://fawetugamuxix.66ghz.com/98446960980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_6039478905a1c.pdfIn PDF document text
    • http://xajabuzowa.scienceontheweb.net/korean_grammar_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476783/normal_5fd97ab0eff8b.pdfIn PDF document text
    • http://winokuzovew.iblogger.org/knowledge_matters_budgeting_and_saving_answers.pdfIn PDF document text
    • https://zozutogumudeke.weebly.com/uploads/1/3/4/4/134440166/3631896.pdfIn PDF document text
    • https://guwuribi.weebly.com/uploads/1/3/0/8/130873976/5192935.pdfIn PDF document text
    • https://wuwenesugujiku.weebly.com/uploads/1/3/0/7/130739695/5800738.pdfIn PDF document text
    • http://wupevijijoze.mygamesonline.org/gafivawefijap.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/1ff806b6-dae8-4207-89c6-dc91bda8b599/still_alice_netflix_deutschland.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/dell_gx620_usff_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/emoji_quiz_bored_button_answers_level_3.pdfIn PDF document text
    • http://zatojigetafugud.epizy.com/consumer_reports_best_mattress_protector.pdfIn PDF document text
    • http://rirusivinudi.rf.gd/hollywood_action_movie_tamil_dubbed_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24f4e854-2ded-494f-bf9c-1901dcafc85d/activate_windows_10_pro_for_free_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/badminton_game_information_in_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/extern_template_constexpr.pdfIn PDF document text
    • http://tarikax.epizy.com/my_pelonis_space_heater_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/xofifupibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c55fb143-eff9-4365-a174-8d696e95610f/wofen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb84a73-c647-4ae2-abf0-3afdcf18119c/parental_stress_index_scoring.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3C 5508 bytes
SHA-256: 2910e8481f559f996d09b1e363036807b1f3deea692db61a6de4114c97977e13
font_01_sfnt_off00014dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD9 10272 bytes
SHA-256: 7a53d66f249dc0cc82b5d615a9dd1358ef32a5985d571e7c556afec40a9ac81f