Malicious PDF — malware analysis report

Static analysis result for SHA-256 09c74c22f444d54a…

MALICIOUS

PDF

81.6 KB Created: 2021-03-20 13:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be2f8a7920b8e1b3dc81346d51a096a SHA-1: 96f72869509a91111a02c92351d3ae7fd36e87de SHA-256: 09c74c22f444d54ab582d222da780a23c32fc1e22668de7c178ed1aaef4aa5ea
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Pueblo district 60 administration building'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://botokaw.ru/wix?keyword=pueblo+district+60+administration+building
    • http://zixudivibudizu.scienceontheweb.net/binary_decimal_hexadecimal_octal_conversion_method.pdf
    • https://cdn-cms.f-static.net/uploads/4487399/normal_5fdb55ba5051f.pdf
    • https://cdn-cms.f-static.net/uploads/4477878/normal_60323ebd19a0e.pdf
    • https://cdn-cms.f-static.net/uploads/4450355/normal_603a70212b9c5.pdf
    • https://cdn-cms.f-static.net/uploads/4486346/normal_60512938378a5.pdf
    • http://slimerecipe.org/wish_promo_codes_for_existing_customers_april_2020pkz4a.pdf
    • https://cdn-cms.f-static.net/uploads/4484399/normal_602c133831500.pdf
    • https://cdn-cms.f-static.net/uploads/4373755/normal_601227a54eead.pdf
    • http://fibutogu.mywebcommunity.org/jejalikiku.pdf
    • https://cdn-cms.f-static.net/uploads/4419204/normal_5fe937f7270e4.pdf
    • https://cdn-cms.f-static.net/uploads/4407784/normal_602b9784cf961.pdf
    • https://cdn-cms.f-static.net/uploads/4385863/normal_60192f6ca4060.pdf
    • http://asta-stroy.ru/who_tb_infection_control_guidelines9dnvk.pdf
    • https://cdn-cms.f-static.net/uploads/4411252/normal_6039d5bd57990.pdf
    • http://jushq.club/12487876789tawrl.pdf
    • http://jaralet.getenjoyment.net/toyota_camry_se_2018_tires.pdf
    • https://cdn-cms.f-static.net/uploads/4365575/normal_602975d6b3f7c.pdf
    • https://cdn-cms.f-static.net/uploads/4487622/normal_60184ea9c4577.pdf
    • https://static.s123-cdn-static.com/uploads/4499984/normal_5fff79401aac0.pdf
    • https://cdn-cms.f-static.net/uploads/4481280/normal_602a80eb6a4cb.pdf
    • http://sizinepizot.scienceontheweb.net/kufovipiv.pdf
    • https://cdn-cms.f-static.net/uploads/4389074/normal_602b64707561e.pdf
    • http://pojapusevipuzu.mypressonline.com/creative_writing_prompts_for_adults.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee44.bin
371726212703d9f618e5ce0739536acbf995b153982196c77143d5d301454836		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE44 3892 bytes
font_01_sfnt_off0000fc35.bin
4d884e5d4898df7790a944329dde0ce37da792f489832421f150b9a1cd7120ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC35 5696 bytes
font_02_sfnt_off00010f76.bin
eb20a5efdaa7555b3a8b7da830ec934050c82edd03b7f64324fe408c8c8c10fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F76 12452 bytes

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