Malicious PDF — malware analysis report

Static analysis result for SHA-256 d237243e99dc780d…

MALICIOUS

PDF

76.9 KB Created: 2021-03-03 18:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 69b16dbc80fe6dc08cb746ccc29cf2b9 SHA-1: 25c47384a7f96fd6b0b0c9cb54e192324c5a46e3 SHA-256: d237243e99dc780d00db0775e7ef4508bbbdb47b7354751ab09cf75e3e628f26
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=can%20i%20get%20free%20autocad%20software PDF link annotation
    • https://dazutexigamufo.weebly.com/uploads/1/3/2/7/132740900/tovotozizefi-ditirovitimavak-tezivujepixabal.pdfIn PDF document text
    • https://cdn.sqhk.co/goganededem/cAVjrOO/wezalepideguvelop.pdfIn PDF document text
    • https://varalege.weebly.com/uploads/1/3/0/7/130738576/tezuzabipuk.pdfIn PDF document text
    • https://cdn.sqhk.co/mogidamiko/jaQgjqo/falling_free_download_ios.pdfIn PDF document text
    • https://pekumovulimezel.weebly.com/uploads/1/3/4/3/134363026/tigudabariv.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/c91FghG/raptor_robot_games_2020_drone_robot_car_games.pdfIn PDF document text
    • https://fodonisegijiwos.weebly.com/uploads/1/3/1/4/131437376/363250.pdfIn PDF document text
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/4259072.pdfIn PDF document text
    • https://lifufokawalujiw.weebly.com/uploads/1/3/4/6/134687559/fimubasotopubalo.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/sunomojowefabep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dirulibas.onlinewebshop.net/32051215506.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/el_modo_de_produccion_esclavista.pdfIn PDF document text
    • http://kesobikifa.epizy.com/bollywood_movies_new_hd_2018.pdfIn PDF document text
    • http://doboroguvenuv.epizy.com/31033371025.pdfIn PDF document text
    • http://ranitirunom.myartsonline.com/optiplex_790_memory_specification.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/cna_certification_test_examination_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/aap_neonatal_hypoglycemia_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/balu_mahi_video_songs.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_off0000efae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAE 5152 bytes
SHA-256: e26e882703c28d01b6cd3a02a0d594c789f392bd1526a7d4cbd7c953b0ac2e0c
font_01_sfnt_off00010155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10155 10944 bytes
SHA-256: 078f71a5fe14c70c2e3750338f0e2253bfaa3ba98ca89a8e003fe6bc2aff6564

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