Malicious PDF — malware analysis report

Static analysis result for SHA-256 41422a415068e016…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 15:35:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1b36940a0bde98b8854c88fa088fd5e SHA-1: 66d3c580f7191d52e743fab76465e2712edfdddd SHA-256: 41422a415068e0163b98eaaf6eb78694976a544a9025392bf82d377b6729b301
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://yafferge.ru/award?keyword=real+estate+certification+near+me In PDF document text
    • http://homearfes.com/tipos_de_sistemas_de_informacion_en_las_empresasxi0vw.pdfIn PDF document text
    • http://ses-paypal.com/amitabh_bachchan_new_songz9yd9.pdfIn PDF document text
    • https://boxotegiperofog.weebly.com/uploads/1/3/1/3/131398000/niferadavinaz.pdfIn PDF document text
    • https://fenatafu.weebly.com/uploads/1/3/1/6/131637570/fuziwi.pdfIn PDF document text
    • http://fesadivu.iblogger.org/remimibewedarimugikir.pdfIn PDF document text
    • http://canonsburglake.com/azure_data_studio_format_sqljvkj9.pdfIn PDF document text
    • http://d2-club.ru/free_games_download_for_pc_websites7zowl.pdfIn PDF document text
    • http://itash.space/682823517866axj7.pdfIn PDF document text
    • http://vovodofozufora.iblogger.org/machiavelli_discourses_on_livy_quotes.pdfIn PDF document text
    • http://getcabinets.xyz/how_to_set_up_ultimate_ears_boom_32imh2.pdfIn PDF document text
    • http://sumidabitax.iblogger.org/godozerivepuxajinezes.pdfIn PDF document text
    • https://murasujudadalox.weebly.com/uploads/1/3/5/3/135338307/418eb99.pdfIn PDF document text
    • https://cdn.sqhk.co/bipufawawi/jaB2tNo/koraradibegagejoti.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/igfhijd/trials_frontier_bike_skins.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/pgeujfI/77466749853.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/game_dev_tycoon_mod_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/fadibaketotuze.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/c_s_c_ka_full_form.pdfIn PDF document text
    • http://bukinajomo.epizy.com/iraq_lobster_piano_sheet_music.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_off0000d738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD738 5032 bytes
SHA-256: de0b0b1fa7524ba39f8750a1321531086c0162860c2aaa6b580f15384bd33450
font_01_sfnt_off0000e846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 10300 bytes
SHA-256: 784534a510987cce965b94559c1b0d64648fc66d10c97b16b27461dce4428249