Malicious PDF — malware analysis report

Static analysis result for SHA-256 982af5b399141f63…

MALICIOUS

PDF

85.7 KB Created: 2021-02-20 16:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b703f6b011ebeaee6c3c55072404672b SHA-1: 4ebba9860721bbe3cb534ec8ec69d721b4c0dc62 SHA-256: 982af5b399141f631936e350c36c8dfd301438f3417a2f30f01b985e970f7a2f
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 URL pointing to a suspicious domain, which is also referenced in the document body. The PDF structure and embedded content suggest it's designed to trick users into clicking the link, likely leading to further malicious activity.

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://jottigo.ru/aws?utm_term=what+event+happened+in+italy+that+started+the+renaissance PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502464/normal_5fe0928a6fadf.pdfIn PDF document text
    • http://lalexejiwisejul.iblogger.org/hellborn_krieg_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366308/normal_5fcc599eeaf46.pdfIn PDF document text
    • http://gerisekazaleg.22web.org/58433431374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5fff23d684117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453907/normal_60149009217fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5feda1881aeee.pdfIn PDF document text
    • http://xsale.trade/33029901713swr9l.pdfIn PDF document text
    • http://hookup154.space/bifime7tm39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492918/normal_601c8a4841516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_601c6b22e6ee8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_6018db00af544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lowadof.epizy.com/bsp_basel_iii_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/the_great_debaters_viewing_guide_day_1.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/aashiqui_2_movie_dialogue_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/pobize.pdfIn PDF document text
    • http://lagorov.rf.gd/robots_androides.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/bombay_tamil_movie_all_songs_free.pdfIn PDF document text
    • http://suvowafavij.epizy.com/fufulelepi.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_off0001135a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1135A 5336 bytes
SHA-256: f66ff911ccae7d6cade389310aa80e13dada34af625f584a045b75dfb135020d
font_01_sfnt_off00012593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12593 10572 bytes
SHA-256: c9f33c82cdedd5cccc304e5413c7925aff71abbd46127bccac24843170f2c4dc

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