Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84c9ddd8e7d7008…

MALICIOUS

PDF

70.8 KB Created: 2021-02-21 14:37:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 9ff57e1c7cd51fa33aa9dceb3e32ec59 SHA-1: 268bc7ec9568bc9d9f8ff1f142ad1b93ee0d5d91 SHA-256: d84c9ddd8e7d7008b9bb967dd427cb820029811299b7c7ff224945a70819dd79
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

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://druttle.ru/wix?keyword=drivers+ed+mililani+high+school PDF link annotation
    • http://wawewifebobojum.22web.org/lewulovejumurigirika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460968/normal_6004142aad8e0.pdfIn PDF document text
    • https://cdn.sqhk.co/vixemujomu/cBhhQic/74460471477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_60158f5802506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fcb1ee1a8b4a.pdfIn PDF document text
    • https://cdn.sqhk.co/sovixojer/ja0rP51/34903223756.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/m1hbWhj/64978079256.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/gS4XPOD/muruxaruwapesiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_6019354cda5d4.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/kufazete/how_to_fix_tub_jets.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/android_stock_phone_app_replacement.pdfIn PDF document text
    • http://rilulavonepuv.epizy.com/89141046113.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/linear_equation_problem_solving_with_answers.pdfIn PDF document text
    • http://xapusadezed.rf.gd/beehive_book_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/80844941806.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/82900504403.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/burning_soulworker_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/air_core_transformer_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/49280546707.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_off0000d7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E4 5412 bytes
SHA-256: c9dcae5e98530b13abed5fd40a269d85e7738ded9d71a6e9d439209c7213a6d1
font_01_sfnt_off0000ea2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2B 10404 bytes
SHA-256: d8f24e47280e0f0f92c3771bc37d1fc6032543094b15a3e8abcbd932811407e6

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