Malicious PDF — malware analysis report

Static analysis result for SHA-256 032a3a1024bc6f78…

MALICIOUS

PDF

84.7 KB Created: 2021-02-19 08:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 92c6ea883feb119e04a30a0c6037ae3f SHA-1: 7cf2fa4d10ef9fe3ed2556814253811899444b66 SHA-256: 032a3a1024bc6f781987d628e0d4ab2bfb8998d6d177d427a883501841eb7675
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to trick users into visiting a malicious site, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=critical+thinking+skills+for+high+school+students PDF link annotation
    • http://uspex22.online/55309633120lrj96.pdfIn PDF document text
    • http://kurs1.xyz/jajexujabimewalelageq1ywv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474191/normal_5fd046591dc6d.pdfIn PDF document text
    • http://mx50off.pro/contoh_rpp_biologi_sma_kurikulum_2020_revisi_2020ja2xq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_602b7fe53e38d.pdfIn PDF document text
    • http://itasda.online/luminous_arc_3_english_20175hjpk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485809/normal_5ff0929418472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447258/normal_60010f1b51a4a.pdfIn PDF document text
    • http://select-get.top/fibupopawizyty72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445326/normal_5feb4f1e4bf1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_600f649485bc5.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/diwitapezu/piscina_campoformido_udine.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/kannada_bhavageethe_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/carry_on_jatta_2_film_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/63123625565.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/powerpoint_template_business_strategy.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/gukatejuledoru.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE084 14832 bytes
SHA-256: 365900abeeca478d3a287c6a1ab6c6b1bd594e064cdd548bddaf15884ff91704
font_01_sfnt_off00010fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA5 5252 bytes
SHA-256: de49d96514278a00e46d8e49be13f1625a536f1d998268dd95eb6c54315d93c2
font_02_sfnt_off00012176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12176 10508 bytes
SHA-256: ba5e02142faa6f7f7324eae9b2c5dabadb4a504b5870667db99635c02a4b9821

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