Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa81061f0063066…

MALICIOUS

PDF

69.0 KB Created: 2021-03-04 00:13:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6a1dc13eb35e641d57c00187ad90170d SHA-1: b5c5a9e29899339683d26389c14d77816f05358e SHA-256: eaa81061f0063066cec71021502f9403edbe1082335f2c9d75fee7c3219568d5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'fokemale.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to downloading drivers for a Lenovo laptop on Windows 7.

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://fokemale.ru/123?utm_term=lenovo+g50-45+80e3+drivers+windows+7+32bit PDF link annotation
    • http://kuvonej.iblogger.org/interior_design_classes_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483589/normal_5feed3f65a76c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392207/normal_5febfcb2b9b1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_5fd84d1a3bc25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388062/normal_603e8b8b1acab.pdfIn PDF document text
    • https://cdn.sqhk.co/zetobazox/u9iajcZ/mufidubibimaja.pdfIn PDF document text
    • http://1xbets-regs.site/live_tv_infinity_apkulc6a.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/kovibu/examen_clinique_de_l_appareil_urinaire.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/toyota_corolla_altis_2009_for_sale_in_islamabad.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/73363850358.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/firmware_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/4022054165.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/10125848886.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/vuzategukagizopowimu.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_off0000cea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA0 5940 bytes
SHA-256: 61237adc4fedaebfc3e3773e42d0931dd4957954214315c97dc3e536ec318f63
font_01_sfnt_off0000e319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE319 10560 bytes
SHA-256: fca40269f6b57a675a2ced818e8cedb94f8678df15cb1baff5c750ce1f08aeb4