Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae73d10dcd68f0d3…

MALICIOUS

PDF

79.6 KB Created: 2021-02-06 16:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2de7aee715ee3a044118fd56785c659d SHA-1: e1a4ce78e2f4643dc319a03c4519dcb22d3028ab SHA-256: ae73d10dcd68f0d3d4e58eb4990e9ffa681a6dd40d47672b9b824be3ff2c4474
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a product advertisement to entice users to click. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the nature of the PDF content suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=sony+bravia+android+tv+32+inch PDF link annotation
    • http://prodit.space/addressing_mode_of_8086_microprocessorvl8jq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427097/normal_5ff4ce8500278.pdfIn PDF document text
    • http://befigter.xyz/xedozomaxepodacymhc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481271/normal_6006347ea8e91.pdfIn PDF document text
    • http://presentinsta.online/vowobusinotokojx7wpx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5fcdec6d13803.pdfIn PDF document text
    • https://cdn.sqhk.co/tudobele/ibC20hj/zowipafi.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/GYiapji/vodafone_yan_mda_apk.pdfIn PDF document text
    • http://saudiautoinsurance.com/canon_in_d_piano_sheet_music_easy_with_lettersgpzf8.pdfIn PDF document text
    • http://fullhp.info/mokinojlacbz.pdfIn PDF document text
    • http://glasshookahcatering.com/energie_cinC3A9tique_1ere_s_exercices_corrigC3A9s87w20.pdfIn PDF document text
    • https://cdn.sqhk.co/wotutovebo/iahe9z4/jopovilemefak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489415/normal_5fef9cbf152ae.pdfIn PDF document text
    • http://trixy-matrix.space/galen_rowell_plane_crash_ntsb_reportndq3k.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/zesixefe/satusakuvigekisosora.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/pojinidamaxomaxibej.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/56842216826.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_off0000f73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF73E 5520 bytes
SHA-256: 879be0e903d184c3e73e0fb95190bfb9651f46aa891701fcd110fa8bb03672da
font_01_sfnt_off00010a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0B 11940 bytes
SHA-256: 269efd07b6987ee909c724bec8e0493d246e5e7fb9b5db3cf89c197273f7abd9

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