Malicious PDF — malware analysis report

Static analysis result for SHA-256 29582a628a4212a4…

MALICIOUS

PDF

66.7 KB Created: 2020-11-11 21:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ba4fc72ab707736526a38d28703f237e SHA-1: 9a5ce7715a50b4bae732f3134abfec0e9169157a SHA-256: 29582a628a4212a4ac37f9dd6dfc7ef8de36dfec04b32810bd395cc0ae48043e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 leads to a suspicious domain, likely intended to trick the user into visiting it. The document body, though heavily obfuscated, appears to contain metadata related to a report form, reinforcing the phishing lure.

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://trafffe.ru/aws?utm_term=child+protection+conference+report+form+liverpool PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455405/normal_5faa3a2258207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458848/normal_5fa1722ecbccc.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/guvovigo/solving_radical_equations_activity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8957115-8e07-4da7-9bb6-1dfbbe588d6b/brother_mfc_8710dw_printer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04f6bd5e-e8ec-4653-9055-45d32c9e26da/39196793648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a808f17f-faa8-46e5-aebb-7de2c4f9ca27/basketball_legends_y8_football.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/mavorofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98709d4c-9c2e-4f4c-a527-f20251016712/jasoxuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf02ba05-7b8b-4930-86ae-8ada41f99699/xumotutis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e2859c-3519-4b9e-a8f4-1b132ab63fe2/pathfinder_character_advancement_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b88fb81-22ee-4fd6-8fa8-10e5f50184d4/rosufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d83f1334-596d-4242-9f3e-e8f60357de41/a_year_with_frog_and_toad_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aae318d-5243-419e-8072-bcab02beaced/guwemepilawuriwuwetolul.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/nidufu.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_off0000cbf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF9 4972 bytes
SHA-256: ee2eb24f8182c9c562a9f02b48fb7521e572b158f3120ffac491c9fd7d852128
font_01_sfnt_off0000dcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBD 9764 bytes
SHA-256: ce6b9501177d42cb9c29613749fd57bddcfdd323fb116dbfcdc55482fd791a25

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