Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a39fa62badbb4a6…

MALICIOUS

PDF

84.5 KB Created: 2021-04-05 10:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630df11887b2fb43a95126db43f84de8 SHA-1: 71713596b2f3e92b2029fbeed9f95e4ec8d62478 SHA-256: 5a39fa62badbb4a65f66f6dda0a415734cba1f83b0725dd8bacdb56c64955182
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be a lure for users searching for specific product parts. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/aws?utm_term=keurig+2.0+k500+parts
    • https://cdn.sqhk.co/ronizimat/kQfjejg/34076479866.pdf
    • http://vuvezalamosi.22web.org/erste_binomische_formel_bungen.pdf
    • https://cdn.sqhk.co/butiluluvuk/fjdghgc/find_my_phone_number_location_online.pdf
    • https://cdn.sqhk.co/tavevalurov/Yjjighc/xuginuzi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d05b2b94-0af3-401c-a6ef-75d00d0b58ae.filesusr.com/ugd/3bca44_d7195a95993e43968f19e2784444c15a.pdf?index=true
    • https://s3.amazonaws.com/woxewiwupir/artificial_neural_networks_tutorials_point.pdf
    • https://d064ede3-316f-4d13-8ec5-014b2136b3bd.filesusr.com/ugd/154db6_2c03ff8ad6684c0ca28bbc0f92cd77ed.pdf?index=true
    • https://s3.amazonaws.com/mexesazaxasa/basel_iii_regulations.pdf
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_b74791569fd84b489b21698ee2c63f1f.pdf?index=true
    • https://s3.amazonaws.com/fupanabivote/ronibokatotemizivot.pdf
    • https://s3.amazonaws.com/tumuzu/interactive_communication_project_management.pdf
    • http://puxakuxuvon.epizy.com/autism_guide_dogs.pdf
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_0161c9eeb345436daed53fcd5a92f086.pdf?index=true
    • https://2987c0f4-171e-4473-b3f1-a5468658115b.filesusr.com/ugd/75ff8a_12d124c71b70469ca5a29f660214864d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d2802b1c-38de-4595-819e-caa41854e6f2/kiffe_kiffe_demain_english_translation.pdf
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_66c19e602f5a407db81861624a7b2cff.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cb175e34-6b86-4037-a6f6-024cf658fb73/verb_conjugation_worksheets.pdf
    • https://521a9f5b-5c7e-4f25-a9e4-5446fb1b1975.filesusr.com/ugd/c1a494_5463e2ebb5414e4cad83d30c247253c4.pdf?index=true
    • https://4123e755-5e7e-4fb8-b167-49ba90d37259.filesusr.com/ugd/fd3290_a363cff1d8ae4caa93cc0ebdb9dd6546.pdf?index=true
    • https://uploads.strikinglycdn.com/files/980db183-55b9-4918-b6df-7a75fde5f827/how_to_do_a_table_of_contents_for_an_essay.pdf
    • https://uploads.strikinglycdn.com/files/8cf0873a-29f6-44fa-9163-b1d194df136a/88157035436.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000feca.bin
17eb1a129d6e348e9c101af91438c15b22b203ee2145687aec0c527cbb58604f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFECA 5420 bytes
font_01_sfnt_off0001114c.bin
f2cc2edb54fdd6bf965a42223c4a16a28e5f5e3db07a758fd338dca7256dec9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1114C 2896 bytes
font_02_sfnt_off00011d51.bin
73bf2994ae7649a25121a55c63987f0a7f3ff8b59f84483869b6cfe08523d15d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D51 11532 bytes

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