Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a737e142d6b78e9…

MALICIOUS

PDF

74.3 KB Created: 2021-02-28 02:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 498bfb75e38f6ae822063302312403dd SHA-1: 41b45a5f45e5debcc6a6c4876691aa0f77388f7d SHA-256: 6a737e142d6b78e979bbe20cd78f0a7e2dccae271f6e380220c441e05d01d5b5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and an embedded URL. ClamAV detection and an ML classifier further indicate maliciousness, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

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://jumiwimov.ru/wix?keyword=their+eyes+were+watching+god+setting+description PDF link annotation
    • https://cdn.sqhk.co/ribobujir/dhhjcjc/loopers_caddie_movie_trailer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405644/normal_5fcd9ffc9ee49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414172/normal_600dfeda03381.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/MsiaQUt/tuvavonezujalofezujelu.pdfIn PDF document text
    • http://gogotaf.iblogger.org/kurafasalepekizebobiduja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481280/normal_601e96dbabcfb.pdfIn PDF document text
    • http://kozovuxe.22web.org/36849664140.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/egfghhg/pcn_2020_farm_show_schedule.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_5fd18a7e21b46.pdfIn PDF document text
    • http://kulofokugizadeb.22web.org/cisco_meraki_mx64_datasheet.pdfIn PDF document text
    • https://cdn.sqhk.co/kesusevuzep/ggogfhv/dodaroxudubuf.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/e6ghiaz/78293410367.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/gezetega/bartonella_bacilliformis_morfologia.pdfIn PDF document text
    • http://pelatid.epizy.com/4679248409.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/1271070250.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/21197055319.pdfIn PDF document text
    • http://kimises.rf.gd/synonym_worksheet_for_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/98372044729.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/fikejeworobotiwen.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_off0000e51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51B 5448 bytes
SHA-256: 449536f7de5adecdeb918f6064a63de2993ef9ecdcf43f7cfba891bded11a9e5
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 10556 bytes
SHA-256: fc8b551002c08606c15c800a2e06ad6be5b832d71079180f69f81ffacbad2a8b

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