Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a9903194abca87…

MALICIOUS

PDF

75.8 KB Created: 2021-03-21 02:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5f4f5a2ed12366da544a018a560d8669 SHA-1: 5a56086e4a3dc879e7330570b4ad0b4ab3d966ef SHA-256: 17a9903194abca8753c4010f2e9e0cf48233bcf576c089274ecd20690d96a2f2
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO spam operation. The embedded URLs and the document's structure indicate an attempt to redirect users to malicious or spam content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/wix?keyword=game+of+bones+diablo+3 PDF link annotation
    • https://fasefipuronupa.weebly.com/uploads/1/3/4/4/134471496/vadorefolizemire.pdfIn PDF document text
    • http://bezerojiw.scienceontheweb.net/51796983575.pdfIn PDF document text
    • https://zotagozugub.weebly.com/uploads/1/3/0/7/130739891/6ad89787e.pdfIn PDF document text
    • https://refapezi.weebly.com/uploads/1/3/4/9/134904673/daf852ba18913.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/xukirizugukugi/buwabesipojetix.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/free_worship_guitar_chords.pdfIn PDF document text
    • https://05b56818-8b0b-4484-a411-4f1234233f1c.filesusr.com/ugd/e49726_19320ddf2f6c47429e97c8a7daacf2b4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec570a4d-9d1a-4eed-aa38-45ec7c56bd54/53121486684.pdfIn PDF document text
    • https://s3.amazonaws.com/zafibimutadoti/wawekotexanalajufanutuji.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/67545529594.pdfIn PDF document text
    • https://91953a53-6f32-4f2a-9b2e-0f954541ff31.filesusr.com/ugd/dad90e_08d9621245a140629994447d78f1c89f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e7159f-2c26-44ad-9444-059ac9e20938/kabitakorujola.pdfIn PDF document text
    • https://ba3a7bb5-edd2-4228-b29c-cf272df6a868.filesusr.com/ugd/bd1c09_8a2d404cc8b140fa9e9ffd1430d5f193.pdf?index=trueIn PDF document text
    • https://cff07a16-13b2-455b-8a78-148a75b158b4.filesusr.com/ugd/cda0c7_455db8c11f4042b898ee2c734e2509c8.pdf?index=trueIn PDF document text
    • http://zirutabu.myartsonline.com/skyrim_full_glass_armor_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fdfbd1a-1a52-42da-bb1f-d90a31837a6e/how_to_explain_pedigree_charts.pdfIn PDF document text
    • https://b5b764bc-4fc6-48d7-9a4b-423a4d05f225.filesusr.com/ugd/3f2390_f7b0d25bb0194b35841da9c746144cf8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lebejos/25170211172.pdfIn PDF document text
    • https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_1e59b34449264a17833f034ea691dd01.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a64cab29-3dcb-4f99-8ba9-79dd3e5caf08/52039674112.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_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 5292 bytes
SHA-256: 91c776a96538414a94757b288a6c36c8bb80b8698d3b27f70bf5b0e6e51ca16b
font_01_sfnt_off0000fd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2C 10468 bytes
SHA-256: eaf3f61e86dcc8fdfb8c37d02b77ccbe3b51261bb820fed37a1cfe73fc8682fc

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