Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aaffada7d49c9ae…

MALICIOUS

PDF

77.0 KB Created: 2021-04-06 01:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 98f0904aa761afd95b18a82991438d32 SHA-1: 565ad0e3dbe9ae6978967c7b12a44f64c9f43be0 SHA-256: 0aaffada7d49c9ae0af3fe6e322d4a2d602c7ff1e4e36add480f34ae67478c48
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://nipisod.ru/strik?utm_term=do+you+need+a+band+and+dj+at+a+wedding PDF link annotation
    • http://ponexikid.22web.org/53058726467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366381/normal_5ff272a8df5b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410206/normal_60623e0800cbe.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/22581942728.pdfIn PDF document text
    • http://wabiferofuvud.mygamesonline.org/study_iq_anthropology.pdfIn PDF document text
    • http://pumujavebedopa.iblogger.org/86335265125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://savikolapuxol.rf.gd/fufemadujirakato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d11d03-5a01-4578-a635-6097d4a2d754/bebogidadabenokazaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/answer_everything_42_quote.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/xagemerafudotoxege.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/ch_spurgeon_sermons_on_prayer.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/dipipuvogunefopimi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/kivebibexewuxo.pdfIn PDF document text
    • http://jowuwivipi.rf.gd/voulez_vous_danser_grand_mre_paroles.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78bb4af6-65f6-4995-94e2-23238448d642/how_long_does_it_take_for_a_first_officer_to_become_a_captain.pdfIn PDF document text
    • http://zipulosi.atwebpages.com/livro_arquitetura_bioclimtica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2855e35e-4271-4edd-87a3-1860d92c7058/34392557798.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/96281724100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2986e6-a66a-48f4-8f9f-581d48948580/very_short_scary_stories_for_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630ceda7-7890-44e2-81c7-46a192aad088/81159952445.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_off0000ef09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF09 5096 bytes
SHA-256: 3e557d153e85155d4455b004d524c9a03d52595edbc128ac6783c74348cb17e0
font_01_sfnt_off00010097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10097 11352 bytes
SHA-256: 57cc52d1f9696864c49fb70466567c177d08e78a1040a59cfc7a7978c9900e34

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