Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b112ff7961af48c…

MALICIOUS

PDF

68.7 KB Created: 2021-01-11 21:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2eeca1eadce2165678319ca178ba3a0b SHA-1: 9aca338dadcca712380f0ade9470f0c74d1bc887 SHA-256: 6b112ff7961af48cfee81a7f9ea9ae6536f541884f633f27f25a6d3d3e4b8d4c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware site. The document body, though heavily obfuscated, suggests a lure related to 'Oracion del dia domingo'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://traffnew.ru/123?utm_term=oracion+del+dia+domingo PDF link annotation
    • https://site-1178373.mozfiles.com/files/1178373/35307548527.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5ff2a96b7c62c.pdfIn PDF document text
    • https://site-1173984.mozfiles.com/files/1173984/keligidel.pdfIn PDF document text
    • https://site-1168218.mozfiles.com/files/1168218/othello_movie_1965_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/melalisopapu/0R4gcie/radiation_island_mod_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/jcBLjdO/lego_city_deep_sea_explorers_2020.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/nufidibodudulad/fazefemaganulakirimu.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/76888637559.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/paulo_coelho_hippie.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_off0000d0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D1 5108 bytes
SHA-256: cdc83b7fb5702838b10c5eed2d61df9c3fb73ff5715d3f9ef4c7a78abb19ebb8
font_01_sfnt_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 11356 bytes
SHA-256: e2ea760403c9839f87109df5e537267733d7d9156c3f44a7db09178ab72a5700

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