Malicious PDF — malware analysis report

Static analysis result for SHA-256 46409e731807a669…

MALICIOUS

PDF

74.4 KB Created: 2021-02-26 12:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0c6bbaef6e2e37ea80bb74b52e5ece2a SHA-1: 276f8fe9740bdebe59c22c346c5ca15486717cdf SHA-256: 46409e731807a669ebe02593c6daa20d004a5509cde5851cab4ad004ec24d615
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains a title suggesting a lure related to federal employee benefits, which is a common social engineering tactic. The embedded URI points to a suspicious domain, likely serving as a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mezovuduw.ru/123?utm_term=will+federal+employees+get+paid+maternity+leave PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424341/normal_602d5b8f8388e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5fe7940ad9871.pdfIn PDF document text
    • https://belanuxaru.weebly.com/uploads/1/3/4/6/134670531/fakez-titofesusupif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fdeb3c2c152c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_6023d0e69e8dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417306/normal_6011deb4e030b.pdfIn PDF document text
    • https://zaxonoso.weebly.com/uploads/1/3/1/3/131381259/2975829.pdfIn PDF document text
    • https://zibomuloxeju.weebly.com/uploads/1/3/2/8/132815028/8ae544107e530a6.pdfIn PDF document text
    • http://ecoservice-vlad.ru/things_to_know_before_buying_a_new_construction_homeobsbb.pdfIn PDF document text
    • http://gidpopiteru.com/994697404cqzot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450641/normal_6009468f1b6a4.pdfIn PDF document text
    • http://nekretnine.site/samsung_rf323tedbsr_ice_maker_removalbo48h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_60373b18bbe02.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/diwitapezu/block_numbers_on_android_zte.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/49070945771.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/formao_do_estado_absolutista_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/80166283857.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/vawefeziwurimu.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/cast_sql_date_format_mm_dd_yyyy.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/13438449241.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_off0000e5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E6 5536 bytes
SHA-256: e2e46cb6132a41c4dc9fea159f636ab1eed68f75f8ae4a410cefc712ed06345b
font_01_sfnt_off0000f8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BF 10196 bytes
SHA-256: e65111204c34e8a8d82a22358989416d80dcfb6b806b773dbcc5b197aba4d457

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