Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec62ba3ee7d77b90…

MALICIOUS

PDF

85.9 KB Created: 2021-03-18 17:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b7805852c409b78b157369f07a1117dd SHA-1: ef623f6eea3533bd2c4936ae1b29587593ac40ff SHA-256: ec62ba3ee7d77b90862fb5f8949faabb8d314ba765be9b25d1fa0037b56d8dd3
96 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 high likelihood of malicious intent. It contains an embedded URI pointing to 'https://midufefew.ru/strik?utm_term=percy+jackson+book+1+chapter+13', which is likely used to deliver a malicious payload or conduct phishing. The document body, though partially garbled, contains text related to 'Percy jackson book 1 chapter 13' and authoring information, suggesting a lure to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://midufefew.ru/strik?utm_term=percy+jackson+book+1+chapter+13 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387698/normal_6039ef93d602a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501634/normal_603866a131181.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470540/normal_60082042b912b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488336/normal_6011899bf3f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385004/normal_60200e58e7622.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453537/normal_5fdedc9ec8a9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450336/normal_5ff373bbd62ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_602d657920551.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/jasadavebaga/airman_information_manual_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/10231619669.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/halo_bassinest_sheets_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/pegovazovujalabijovij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c81ae1-7dd5-4cde-9586-0fc01a173b07/91833470341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d5fc32a-690a-45dc-835d-0ff9ca099141/how_to_watch_marvel_series_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/6688587009.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/how_to_publish_a_book_on_amazon_and_make_money.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3b10fb0-edbd-43de-bb9d-79729d9fa161/how_to_read_the_bible_in_one_year.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/kasturirangan_report_year.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/carmina_burana_poemas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18ec2371-6da6-401f-83ff-6b4bb5726125/29865112011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2de4bbbc-51bf-418e-bc85-554600f81980/manual_de_instrucciones_grabadora_sony_icd-px333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf4c7de-90bb-4e7e-a778-4cae9ae8a912/tikewuwadanufirusosa.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/amd_a4_3330mx_ethernet_driver.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_off00011248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11248 5588 bytes
SHA-256: d0d2409bc8c0affdf9d9c3638f3cc139d96178c238168514bcfd93a4559b3042
font_01_sfnt_off0001255b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255B 10320 bytes
SHA-256: 433e26e39c9578c38081c4dde80ed8575b415cf1d40344f16e2a6dda3358d6b0

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