Malicious PDF — malware analysis report

Static analysis result for SHA-256 568d0444fe9e5251…

MALICIOUS

PDF

67.1 KB Created: 2020-11-18 03:32:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d9b3e855b7492eb41393eee1e511880d SHA-1: 14c4d70d0f952c77e813c685ecf03001ab4d65e1 SHA-256: 568d0444fe9e5251100dec9fa9ee4839e148c4bef8dd80d3cfc8d1623f72d6ff
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains multiple embedded URLs, one of which is `https://traffine.ru/aws?utm_term=baseline+assessment+in+education+pdf`, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URIs strongly suggests a phishing attempt.

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://traffine.ru/aws?utm_term=baseline+assessment+in+education+pdf PDF link annotation
    • https://bazulerijodinib.weebly.com/uploads/1/3/1/8/131856415/gaxovebexekuti.pdfIn PDF document text
    • https://vaxonarug.weebly.com/uploads/1/3/4/3/134378521/difetexawazuxut_fenemuzulodeta_gimivexoreg_malexuni.pdfIn PDF document text
    • https://vejegiraforid.weebly.com/uploads/1/3/4/3/134311029/890380.pdfIn PDF document text
    • https://nipezititixi.weebly.com/uploads/1/3/4/6/134688951/fifizeperomobema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f912787258f9.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/613a711ec7ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f9f3c05587c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f80ee16e-8190-4e52-9f8b-b040c536213e/victor_wooten_the_music_lesson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c28cbeb2-ccf7-404d-a3cb-2f0b2b3e8e51/14331910972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38373f29-2396-47e0-b2b0-1f6dcaa309a6/idle_heroes_mod_apk_android.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_off0000cb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB16 5256 bytes
SHA-256: 8b5e804a058ad4bf3d93b97b2439629f282ce3b36ee3ebb0efbace2aa6c95bc4
font_01_sfnt_off0000dce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE7 10144 bytes
SHA-256: a74379865febeebb9de6ab841ad5b07db9730acbd92509770466e6763060af2a