Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4ed75802886495…

MALICIOUS

PDF

58.9 KB Created: 2020-12-22 06:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e4842caddde469d18dec9194212e43b1 SHA-1: e4b07a1bebddb4c1e1c312a957d3b94b93a43a1b SHA-256: 6d4ed75802886495bdd00b94e39e5ec58c844cbda0bf9fd0148de5c15d70de15
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains a lure related to a restaurant menu, directing the user to a suspicious URL. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. No scripts were extracted, but the embedded URI and document content suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/strik?utm_term=ding+ding+dumpling+house+union+city+menu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420245/normal_5fc83ba188dda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485442/normal_5fa76060750d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424935/normal_5fd287e962186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5f9c343eb1b23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbfe895e5c7695ca99606f9/t/5fc5674b3c6ccf69f314c453/1606772555859/the_thyroid_diet_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/28927111411.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f4a62e34347c70445090/t/5fcc3a767ae85b53b2846e79/1607219835869/jenaxasev.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/wedding_fan_programs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bc9465a-9bf8-4448-bc60-7dd5df768d67/jillam_jillala_mp3_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd4465698adc479d44297f/1606239333822/fakiferotobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e7b506-2157-465f-a21c-aa58c19cbdc3/fazail_amal_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a6071e-4589-4be7-bfb3-d75fa8f6599b/epson_sx420w_driver_windows_7_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/50146080634.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfcaad334513fae422692/1606220970746/32177935855.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_off0000aba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA6 5280 bytes
SHA-256: fef2146a10ecfbda087098273b26dbe719ba73b68afc4a74779f469eba5b1094
font_01_sfnt_off0000bd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8B 9700 bytes
SHA-256: ee3459340d3d813e0b6464902049bc496a2e5f9b61582979e305971f5be658ba

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