Malicious PDF — malware analysis report

Static analysis result for SHA-256 821ba075770a4dd5…

MALICIOUS

PDF

69.3 KB Created: 2021-01-21 18:02:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8082403c7f9e98d1a12883af84107fc5 SHA-1: 4d695c6a9df0bc7caa4e25958931f2eca63e3415 SHA-256: 821ba075770a4dd517dbe17c4b1a4319fd3b7d74b79cf9bc049121ffe6b31413
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/wb?keyword=blood%20pressure%20monitor%20amazon.%20ca PDF link annotation
    • https://cdn.sqhk.co/gugapedulob/iiGdedI/to_do_list_free_app_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/kMM5ihh/wekenebu.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/jgh6iaE/survival_rate_of_covid_19_by_age_usa.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/Wihjfhf/find_my_friends_app_location_not_updating.pdfIn PDF document text
    • https://cdn.sqhk.co/wememiguw/Kgi1Ja4/92550753129.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404133/normal_5fda237d7e76f.pdfIn PDF document text
    • http://filuniguwol.22web.org/bagolegexakikunope.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/luropiw/apogee_jam_plus_user_manual.pdfIn PDF document text
    • http://dixuzudes.epizy.com/20431748452.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/chrome_extension_json_format.pdfIn PDF document text
    • http://dejanubotikepiw.rf.gd/legends_of_runeterra_card_template.pdfIn PDF document text
    • http://widafasamuj.epizy.com/bangla_typing_keyboard_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/black_administration_act_38_of_1927.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/block_adchoices_ads_on_android.pdfIn PDF document text
    • http://pimibini.epizy.com/11468753469.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_off0000d2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CC 5352 bytes
SHA-256: 143ea4f0d83cf4e7bbd4fc18a7833fcca484c9176b212565c98f8520f6203aab
font_01_sfnt_off0000e4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F1 10444 bytes
SHA-256: dbb60d1919aedf0b9d15b3a189993f495151666b8fe783ee16e7b8891e9c0e0a