Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ed9dfca4f4f01f…

MALICIOUS

PDF

85.3 KB Created: 2021-05-30 04:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 391824e0c632a4821929a9850a98ca80 SHA-1: b044e99623af5f3ca8a84e0f741199013d29c67f SHA-256: d0ed9dfca4f4f01f0538760650338b5b6f7cfe08e51c4c31562561a044ad8c09
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/123?utm_term=delhi+anganwadi+recruitment+2018+online+application+form PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451375/normal_5fd05738599a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402737/normal_6017a121b17dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_60627b53e4fd9.pdfIn PDF document text
    • https://gixoloxivut.weebly.com/uploads/1/3/4/0/134040336/mewujiwa_midepegi_zewewinusub_folezabugimova.pdfIn PDF document text
    • https://duduzigofusu.weebly.com/uploads/1/3/2/8/132815892/0f1cca40081c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449974/normal_606c775144d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479933/normal_5fd95bb374dfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_606e75f58a757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387430/normal_5ff09d418b6cc.pdfIn PDF document text
    • https://vopixovusaf.weebly.com/uploads/1/3/4/8/134883771/1296292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457868/normal_606446d01a930.pdfIn PDF document text
    • https://wafumaxa.weebly.com/uploads/1/3/5/4/135400811/9763306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408461/normal_5feb61e47e1a1.pdfIn PDF document text
    • https://jajozopikikaju.weebly.com/uploads/1/3/4/3/134359408/lirusami.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412900/normal_5febdf32e08a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483623/normal_604a8ec230baf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5fdfc6e8d344b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_6026196bc6dfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401691/normal_5ff597eb5f3d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450340/normal_5fd650b82c14f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_605897dad25c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1B 6000 bytes
SHA-256: 41b395a187c3c3b1479b15dfdf6a7a45ac1507081299b97496c19cecadfd3ca9
font_01_sfnt_off0000fe7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 10956 bytes
SHA-256: e8ae65a8e4203710828c752a383469ca378227d4bd23c884053faaa5311521e5
font_02_sfnt_off00012401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12401 11348 bytes
SHA-256: 9c6656251ace379cb030c6051bd00ece9bb889b7e0dc61ff765243e312b2cad7

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