Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8dfc57344fe8f20…

MALICIOUS

PDF

131.5 KB Created: 2021-03-03 17:45:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: eadf2e7ef11b68b7a1343917294c19f2 SHA-1: 79cad57f7ce4e8c4c9b9e8faf086de01d02af476 SHA-256: f8dfc57344fe8f20f1327997b0a3c8a9058f14cc299d700da01ff8e6e38235f9
104 Risk Score

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 URI pointing to a suspicious domain, likely intended to deliver a secondary payload. The presence of a visual download button further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/strik?utm_term=golf+buddy+aim+v10+app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4488092/normal_603df9290ba2d.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/cijhbgj/27972252394.pdfIn PDF document text
    • https://cdn.sqhk.co/seponidozit/ih0ijPD/wutiribexoxiwiwisewedef.pdfIn PDF document text
    • https://cdn.sqhk.co/nujoxodove/jhijgZE/33852796438.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/hdDiegd/rudebaxupefavagivunasivav.pdfIn PDF document text
    • http://wegoluxetas.scienceontheweb.net/67428978730.pdfIn PDF document text
    • https://cdn.sqhk.co/rudugebakivo/ihaejiH/masevewazezonigeruxonuf.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/lovomijelun/kateni.pdfIn PDF document text
    • http://vupafigimewex.rf.gd/vutitijularagubijiv.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/kuzaxewufofukulopizu.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/filmywap_punjabi_movies_2019_shada.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/allianz_malaysia_annual_report_2017.pdfIn PDF document text
    • http://turomidujamo.epizy.com/98100688766.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_off00019ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FF5 8760 bytes
SHA-256: 4137e3b82ce3ce2dd3f0fb8f9b087d9d210103ce43cc9e42db8517d0a9b7a112
font_01_sfnt_off0001bc4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC4C 5440 bytes
SHA-256: 9efa308735c678631ad0a2302aa6d25bade7841158d5a34e51e5c93821cb60f3
font_02_sfnt_off0001ced2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CED2 15460 bytes
SHA-256: b757bd9d61010a7a0964f8c1132df89388b4c5333721bee6cf5cf38afa5e46a9

Open this report in the interactive analyzer, or submit your own file for analysis.