Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19c774591562e8f…

MALICIOUS

PDF

72.2 KB Created: 2021-04-26 17:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: cc5fc4e78bc7b5863bfaca6b9f9aac97 SHA-1: c0695d5f66c4155cf2f157b5219f77907ea2e3dc SHA-256: d19c774591562e8fc9f317b272460a37eb602dc8f8d17189b96e26c509f66876
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this malicious intent. ClamAV detection further confirms its malicious nature, classifying it as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the document's structure and URL content are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/strik?utm_term=getting+where+you+want+to+be+quotes PDF link annotation
    • http://appletopshop.ru/rasapaduribixeromusunollhv1.pdfIn PDF document text
    • http://genusadnlo.space/is_logic_a_good_daw39krc.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/ravipoxofixanudodjveat.pdfIn PDF document text
    • https://cdn.sqhk.co/fisoxinizo/cgejijZ/blocky_roads_free_online_game.pdfIn PDF document text
    • http://cashfree.store/are_meal_replacement_drinks_good_for_weight_lossmkm1x.pdfIn PDF document text
    • http://gowanenutik.mypressonline.com/xupenadorapuniwavexolenib.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/kosega.pdfIn PDF document text
    • http://wirelessinfo.ru/kabbage_small_business_loansy9vfl.pdfIn PDF document text
    • https://cdn.sqhk.co/resesexiraf/bhagegj/kuvabasas.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxifobiro/puibig7/leropuxufojowawunuwoxe.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/foxasefano.pdfIn PDF document text
    • http://mamontov-net.cc/what_is_second_order_reaction2a86v.pdfIn PDF document text
    • http://zawukinaloluku.sportsontheweb.net/45598490550.pdfIn PDF document text
    • http://wordwild-store.com/medical_surgical_nursing_test_bank_ptv19u.pdfIn PDF document text
    • http://abanca-electronica.com/historia_y_evolucion_de_los_derechos_humanos_en_mexico241g8.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/ugeghif/uae_exchange_rate_today.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/X0hhbvY/bonedugegutuxefugenizu.pdfIn PDF document text
    • https://cdn.sqhk.co/kavatupopum/hjxhgcM/thief_city_heritage_plaques_locations.pdfIn PDF document text
    • http://tanivikovome.sportsontheweb.net/lazigu.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/kjfnnJq/finding_blue_free_download_apk.pdfIn PDF document text
    • http://rawenspant.online/xopalibapipapanijexoljbarj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lexekuduwowig.atwebpages.com/architecture_101.pdfIn PDF document text
    • http://pajupevezujugut.atwebpages.com/polk_audio_magnifi_mini_app.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD21 5404 bytes
SHA-256: 97292269b07eeb41e84dd8a14c22d8b15c3a6082a124140effd2c4d5ee808b40
font_01_sfnt_off0000ef94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF94 10044 bytes
SHA-256: bb974e02e33bd4bcfc195c90ff17a5d1a69e815f44d17bcbfdb686068e07d1a9

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