Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eda0260a920b6f3…

MALICIOUS

PDF

70.5 KB Created: 2020-11-11 02:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9166fb6035b609d7c4d977bdfca5147c SHA-1: 177faa412ddf8f56d8838a0cb1ea36f5a564c5ae SHA-256: 9eda0260a920b6f3f51bca35142ec9f1d6b1135ab1b1c3418e078cebbe2a6199
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains an embedded URI pointing to 'trafffi.ru', which is likely a malicious domain used for phishing or malware distribution. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/aws?keyword=wimbledon+final+live+stream+reddit PDF link annotation
    • https://wovuposekase.weebly.com/uploads/1/3/4/6/134613379/b1ad646.pdfIn PDF document text
    • https://wavutokemik.weebly.com/uploads/1/3/4/3/134309613/5439130.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d78d46c-234f-418a-bbf9-f882336b9fd3/xejowitodaropetoxezepuraw.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/vojuratipopofakudo.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/bloons_td_6_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5d8cf5-8705-45f8-b277-d71f1b0f7ade/hp_48gx_tds_survey_pro_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad334cc-3e40-472c-b5b1-7a4291fc844e/the_godfather_2_online_subtitrat.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/how_to_remove_a_curse_in_minecraft.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/sumber_daya_manusia.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/raechel_s_eyes.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/xawejebolakitumuto.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/26240157488.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_off0000d5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F9 5264 bytes
SHA-256: d563942304c227464beeb559b85bc852d72d0074bbf49c565f37c53069f6cff4
font_01_sfnt_off0000e7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D6 11016 bytes
SHA-256: da19a3f44a0960fae56e164139e1331ec168dce09463087cd52c0da13a412f81

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