Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1119ddda585112…

MALICIOUS

PDF

77.9 KB Created: 2021-03-03 01:18:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6eeddd2b2669b0b72ce6337fdb894bf7 SHA-1: 3ab9adb3a5715e6e63a64c3f2294788580999e26 SHA-256: ea1119ddda585112a1031fe532d9cfc99a20292deb625a0b310a75675b8a567a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/award?keyword=str+dn1040+sony PDF link annotation
    • https://zeleveruki.weebly.com/uploads/1/3/4/8/134898901/nexikexafew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459323/normal_5fcb978b8ea53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485434/normal_60177ae52300c.pdfIn PDF document text
    • https://dexuganepo.weebly.com/uploads/1/3/1/6/131608037/3742833.pdfIn PDF document text
    • http://mamajan.space/57614054803a6ko.pdfIn PDF document text
    • http://fesebenawasoz.iblogger.org/98049733196.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407756/normal_5fc655ee6bb89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5ff7d6a18245b.pdfIn PDF document text
    • http://springtea.space/parallel_perpendicular_or_intersecting_lines_worksheetwrhoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424991/normal_601bfa8f35064.pdfIn PDF document text
    • http://itawomen.fun/paracord_handle_wrap_instructions5ol74.pdfIn PDF document text
    • http://tivugijina.22web.org/54893236841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5fef7beaa0467.pdfIn PDF document text
    • https://xuzizalebu.weebly.com/uploads/1/3/4/7/134772475/nemiloged.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suwutosu.epizy.com/forrest_fenn_home_santa_fe.pdfIn PDF document text
    • http://baxamudixilado.rf.gd/esl_free_worksheet_printables.pdfIn PDF document text
    • http://garaben.rf.gd/gisodonugivukumemarifara.pdfIn PDF document text
    • http://gijewitog.rf.gd/how_to_use_the_hoover_max_extract_60.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_off0000f44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44B 5064 bytes
SHA-256: 7cba239af01a6af227e0d14c35c89b82ccc8d5591eec4a47adca11039a967e44
font_01_sfnt_off000105a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A6 11028 bytes
SHA-256: 678b6ca32a3c1faa0927254d1f2e682aa65c7b628ba4fb83edc155a0341ef2fa

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