Malicious PDF — malware analysis report

Static analysis result for SHA-256 719894a70a98e3b2…

MALICIOUS

PDF

91.3 KB Created: 2021-04-01 05:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 751893e260a78c4814334103cf0d6f83 SHA-1: 8217b419f1cd93d5ccd4f65d07dce8d0c22b372a SHA-256: 719894a70a98e3b2e67adf2a59b9f484ba8e7f0c8ee19c6f6767378644793827
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The ML classifier and ClamAV detection strongly indicate maliciousness. The heuristic firings point to the presence of external URIs and a lure related to invoices or payments, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ponafet.ru/wix?keyword=recorded+notice+of+commencement+orange+county+florida
    • https://cdn.sqhk.co/konajera/kDjajaJ/sixupatuserulejodupiboj.pdf
    • https://cdn-cms.f-static.net/uploads/4418379/normal_605abfe3ab78e.pdf
    • http://sopixunutenorix.iblogger.org/past_tense_present_tense_future_tense_list.pdf
    • https://cdn-cms.f-static.net/uploads/4388427/normal_5fd76f4c48284.pdf
    • https://cdn-cms.f-static.net/uploads/4481676/normal_602dc54347267.pdf
    • https://cdn-cms.f-static.net/uploads/4380080/normal_6060be8c6b534.pdf
    • http://mesanezedid.mypressonline.com/68772812564.pdf
    • http://nekazupafo.mygamesonline.org/nezeruwadusosox.pdf
    • https://cdn.sqhk.co/luwesefizi/b2DMuug/79840740838.pdf
    • https://cdn-cms.f-static.net/uploads/4427079/normal_605678d7418e3.pdf
    • http://sifisomatexow.sportsontheweb.net/steroidal_saponins.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6ec1ccb2-1fe7-40eb-9174-1a1af893703f/bible_quiz_genesis_chapter_22.pdf
    • http://todiwemutu.rf.gd/79109171761.pdf
    • http://xevazuguvapuj.rf.gd/29764741222.pdf
    • http://lorabedujeweb.epizy.com/rojabirogajegudusudiririz.pdf
    • https://uploads.strikinglycdn.com/files/c3a332c4-642e-4faf-aa4c-ea24c1c9c5af/cirque_du_freak_manga_volume_9_read_online.pdf
    • https://uploads.strikinglycdn.com/files/e5370623-1a7d-40b6-8f05-e57b0dfe78f8/winter_maintenance_tips_for_your_home.pdf
    • http://moxadokikubod.onlinewebshop.net/71533234442.pdf
    • https://uploads.strikinglycdn.com/files/c5fa6017-5626-447b-a05c-1dd6b4fc1d83/ap_3d_concentration_ideas.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000123d6.bin
ec0d897c1d52be9b84cecd25f19b78f881db8a32781210d62b22712ad775061c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123D6 5272 bytes
font_01_sfnt_off000135be.bin
46f7c7501752088111e92607f1dd4226a53bbe443fb3c3bcbef71d4228405966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135BE 11952 bytes

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