Malicious PDF — malware analysis report

Static analysis result for SHA-256 e003d42776033772…

MALICIOUS

PDF

135.4 KB Created: 2021-03-07 07:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1dc0c3ae2b44c727e141937548f2a6c8 SHA-1: 99338b22f9812919da4100f3c418f6bf131e34bf SHA-256: e003d42776033772c9a9843ee3ea07507e18012c324f58970fe9c3efcea2f0a6
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links that redirect to external websites, with at least one identified as malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Dell latitude e5420 release date', suggesting a lure to attract users to click on these links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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
  • 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/strik?utm_term=dell+latitude+e5420+release+date In PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/what_does_it_mean_when_a_horse_is_wind_broke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388841/normal_5ff56a24bd35c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366978/normal_6004f3d5f19ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_5fe9e328c55af.pdfIn PDF document text
    • http://1xbet-football.fun/jokefasumelujinugesixejq766f.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/iZCbagc/plants_vs_zombies_garden_warfare_2.pdfIn PDF document text
    • http://memimusisat.getenjoyment.net/luned.pdfIn PDF document text
    • http://zokidinodajives.getenjoyment.net/autocad_3d_software_free_download_full_version_2015.pdfIn PDF document text
    • http://losinglotterynumbers.com/creepypasta_amino_apkv7usq.pdfIn PDF document text
    • http://vvd.bar/black_s_law_dictionary_5th_editionallqa.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/fx1Kjj6/switchblades_for_sale_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/hdQIjjt/anysoftkeyboard_hebrew_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/gibje5N/fishing_break_special_fish_times.pdfIn PDF document text
    • https://cdn.sqhk.co/zifegowuf/1CieHih/madumiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374535/normal_6002c4c1bbc58.pdfIn PDF document text
    • http://axecheat6.xyz/hdri_forest_3ds_max_2020kqhvt.pdfIn PDF document text
    • http://natur-bio.space/nadapikunogege48hr0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406771/normal_5ff803dd8f520.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dibezage.epizy.com/hunter_x_core_zone_not_working.pdfIn PDF document text
    • http://dazimosanugep.epizy.com/mercury_9.9_4_stroke_electric_start_short_shaft.pdfIn PDF document text
    • http://merovuditipin.onlinewebshop.net/redobepunojapupetebudev.pdfIn PDF document text
    • http://zuzimadatunukag.rf.gd/76649888303.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/15938089263.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_off0001d0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0D8 5304 bytes
SHA-256: 24a2da50fba61ef69bfbe55be39312dd2b324166f0dcf5029b8c78bf1544d9fe
font_01_sfnt_off0001e2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E2FB 12932 bytes
SHA-256: 3090e6d3d19efec53a7c3231d55d81288492afc6cc7b62f6d58725c435e07eef

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