Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0b8b509afb9fa4…

MALICIOUS

PDF

69.4 KB Created: 2021-01-04 20:45:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6ecc738d8944ac06c7753342c7f62a13 SHA-1: 950fd31d68a7a8f78fad572c88d4d864d37a7a19 SHA-256: df0b8b509afb9fa4ad1d6f0897c8ba1756072edf3216bf534eb7873d02e297aa
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The PDF structure itself appears to be intentionally malformed, with duplicate object bodies, suggesting an attempt to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/aws?utm_term=chassis+design+milliken+pdf PDF link annotation
    • https://cdn.sqhk.co/jebixusugak/wWgihi9/popular_hashtags_today_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/zedawuzijis/1zjb5Tp/93881260343.pdfIn PDF document text
    • https://cdn.sqhk.co/wotudasigeb/jggiCic/xaxiginuke.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hmjbjgg/42083601362.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/degagaziv/faleki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d317a48-d465-4f0a-a817-fcf1700ea737/tuvukuriviwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fa0c7a-6e42-4636-8968-ed31ba20d30a/watch_new_jack_city_full_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df0280f4-2d1f-40e8-9445-afe60c93cc0b/zitasorabidem.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/bagebaluxaxagekerap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce1ed59-0252-476a-8187-78e05e3bf987/nomenclature_worksheet_6_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/brookfield_school_chesterfield_uniform.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c80aa1-2dbe-4dd3-b97e-55df6301294c/party_in_my_dorm_mod_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/migoliwadikenimolonis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38ee4420-1056-4ee7-ac02-42d052fdd8ea/thetford_92360_porta_potti_550e.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_off0000d284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD284 5328 bytes
SHA-256: f890549f823cb38be511185db51895ee301286202cfc32afcb5ec5dceaaca1f1
font_01_sfnt_off0000e480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE480 10648 bytes
SHA-256: 2801be4334f9a009564ac16a8a7b2f6daa083bd734a49be509075b6af9e4f5ec

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