Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfee0de201a3d2c…

MALICIOUS

PDF

71.1 KB Created: 2020-11-26 06:25:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3026a7a42dc791a5742141ad7164c12a SHA-1: 1c5eae26724ce983084e115f2af815f77d086230 SHA-256: 7cfee0de201a3d2c3551d5ee29fb7c6813cd15eb8b9d8d1f5a033d89df2125e5
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is a PDF that contains a malicious redirector link pointing to a URL associated with phishing and financial lures. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of a social engineering attempt to trick the user into revealing sensitive financial information.

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
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://cctraff.ru/strik?utm_term=what+time+does+chime+direct+deposit+hit+on+thursday In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/21155673847.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/bokiril.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/trolley_bags_size_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e945d609-51ce-4b5b-adfe-c05736f691ef/fuzasezulas.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/freakonomics_movie_worksheet_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37afc877-db2e-4b5d-a989-760642cd51c2/648909493.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/rirejesumugutin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0abed0b8-5429-49d7-aedb-93fedd167ae1/93648531733.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/bottle_filling_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56d3ac6-2b00-426a-aa7a-7191a9f38ff0/kaun_tujhe_yun_pyar_karega_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/93778223324.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/rageruwanupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0fa67fa-8d4d-401d-8f7e-f26af8fe5423/onigiri_leveling_guide.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_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 5396 bytes
SHA-256: 32a87c1a0feb47ce383fdc9eae55f97e5b209c031ce2aea63f3ee2a830977acf
font_01_sfnt_off0000eb5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5C 10520 bytes
SHA-256: c2d2df2663085e4803829a9f78d957fd88ec83e4aaaa03ebd8622efcd38cf8bf

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