Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff6c56b9f526ac6…

MALICIOUS

PDF

80.0 KB Created: 2021-03-05 10:36:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3024e93b8ce7afc818e6b0a7c281bada SHA-1: 963c07161e48ef1c9628b1bbf7f9f998e0f28256 SHA-256: 9ff6c56b9f526ac6d984d3c6acac70b3bff2a7ae6cf16762b698d3e34bbe45aa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/award?keyword=can+you+take+your+driver%2527s+license+test+online PDF link annotation
    • https://cdn.sqhk.co/xedasuzefer/je7hdzU/carmageddon_2_cars.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469135/normal_601bab7aabdbb.pdfIn PDF document text
    • https://cdn.sqhk.co/xidupesijij/jMEDjcK/mowebekopav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455876/normal_5fddd9048a62e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458633/normal_60088f3f97fd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392656/normal_5fccdaedb4592.pdfIn PDF document text
    • http://dakixofib.22web.org/renilixaxinuwipev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_601df90da7240.pdfIn PDF document text
    • https://cdn.sqhk.co/zekafomaze/ZhaIQjj/werexumekadowejeb.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/gazijewevan/74811716208.pdfIn PDF document text
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_23b63afd41fb4bc48f2bdf4ba103c480.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e19eebb-9ed0-404c-82d2-879cb2789564/reading_comprehension_strategies_for_high_school.pdfIn PDF document text
    • http://pofumitiko.epizy.com/90198442543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8ac3c91-f061-48af-b60b-8949ce458f0f/how_to_clean_a_miller_trailer_furnace.pdfIn PDF document text
    • https://d3826037-6016-486c-99e9-dc41bc666644.filesusr.com/ugd/b81754_fdb72f734d9f4cd895d1e12bb279cf4d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tarajix/chapter_5_test_form_2d_answers_algebra_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba8fa7fe-44c1-4c8a-9796-ba5a822bf98a/lixax.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/abrasive_jet_machining_nptel.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/galaxy_j7_2016_sm_j710fn_firmware.pdfIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_f44410cabd024613a17706a993bc92e2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/35934ed1-c1e6-4271-94dc-83eda94a5de7/25297328691.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/diwubafivojuxukavik.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_off0000fc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC32 5096 bytes
SHA-256: 0eb1bd04d7bc6a82be3fade1be33dbf56f5773358b0d5ce0756970d9322cf730
font_01_sfnt_off00010dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DAB 10756 bytes
SHA-256: de6c31ca09967812eca8afa83e3bf2a4631d616fbbfe54012e8c148980608c9b

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