Malicious PDF — malware analysis report

Static analysis result for SHA-256 70801b09dd992c8b…

MALICIOUS

PDF

75.2 KB Created: 2021-03-25 12:09:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 18fe6d679ac7102658b0d05caf9d6ef7 SHA-1: 9f7a64d62ee4d217cf87d0830590128157de7b5e SHA-256: 70801b09dd992c8bbda10c242d41a70f67ceff75649c37cc6ff3b9bdcd5b9f87
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, 'midufefew.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a 'Wiedzmin 3 bestiary pdf', aiming to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://midufefew.ru/award?keyword=wied%25C5%25BAmin+3+bestiariusz+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480155/normal_5ff33a4e3f08d.pdfIn PDF document text
    • https://cdn.sqhk.co/kubabulukod/HhajdpT/earthquake_survival_kit_list.pdfIn PDF document text
    • http://akfb.online/thomson_martinet_a_practical_english_grammar_exercises_3j59i3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_5fdb1aff1e937.pdfIn PDF document text
    • http://bigtittybella.com/54959763652mu6l1.pdfIn PDF document text
    • http://power-guard.shop/bjp_party_new_songnn3kr.pdfIn PDF document text
    • http://goldstein.capital/are_banana_and_milk_smoothie_healthyvp5di.pdfIn PDF document text
    • http://mbfsopg.com/tirolwv7xm.pdfIn PDF document text
    • http://bettermoneytips.com/chapati_roti_video57jvq.pdfIn PDF document text
    • http://samozanyat.info/firozejewojebogusakurenpjjmp.pdfIn PDF document text
    • http://chempion.coffee/capstan_and_turret_lathe_notessbvsa.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/Yyicihg/autonics_panel_meter.pdfIn PDF document text
    • http://flymoney.net/xevaboratazidibilobigeluv9188u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a2c67b61-a01d-4053-b7ad-f1487bca8054.filesusr.com/ugd/24853a_7f797ef86d46411cbb6ea4ff5525109a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4151b5f8-25bb-4513-a138-76991440a533/653411764.pdfIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_edba056e95db4841b068b5b1d0033606.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51eff3c-88ec-4578-bc08-e2ca7231a34a/what_happens_when_you_google_thanos_and_click_the_gauntlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46f4b85f-3415-4252-bfdd-942c0756119d/brother_hl-2240_software_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052df0ea-c320-4ee8-983b-bc828a4c0dc7/moxibomixopemu.pdfIn PDF document text
    • https://cd29ef07-728f-4a0b-b57b-23e770395c36.filesusr.com/ugd/f14cf6_4dc548fcd0be42a4a03561f632448df6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43d0230-56d9-4f9a-a29c-abd01c015e6e/miller_syncrowave_250_parts.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_off0000e4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F0 5592 bytes
SHA-256: 16477cbbe6ad6cb3bb42198ba8d22fc09503bf9fb216272888f3b8f87e420fd4
font_01_sfnt_off0000f7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E3 11892 bytes
SHA-256: e18adbb22e3950affb115fad1a8b8d460cf41c46c74de2fc0433069a39e16547

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