Malicious PDF — malware analysis report

Static analysis result for SHA-256 712520c61e6bae15…

MALICIOUS

PDF

282.7 KB Created: 2020-11-26 10:19:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 284fa328e8d01d76f7efa891cee40a4e SHA-1: 16eab327674a55bb614d375507b915c7d5549e40 SHA-256: 712520c61e6bae15bd1dfd0c24dded1754b24b52482c39bf3528f38cb44526fe
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a redirector link to known malicious infrastructure. The embedded URL `https://traffking.ru/123?utm_term=que+es+un+lider+social` is a critical indicator of this malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of malicious redirectors suggest an attempt to lure the user to a harmful site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/123?utm_term=que+es+un+lider+social In PDF document text
    • https://mufedagejex.weebly.com/uploads/1/3/4/7/134726032/3d21f99.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/212244991a56c32.pdfIn PDF document text
    • https://jirunemopisitex.weebly.com/uploads/1/3/4/3/134332051/59a81f4ec55b.pdfIn PDF document text
    • https://fulodovujigiw.weebly.com/uploads/1/3/4/0/134016909/5418130.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_5f97c56c6dbd4.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/belotovubebulux-vegobeladodu-luvapevewunalo-kepugagol.pdfIn PDF document text
    • https://konevumi.weebly.com/uploads/1/3/4/3/134399330/pebevejimiki-vokomawavawus.pdfIn PDF document text
    • https://vebafuxitupum.weebly.com/uploads/1/3/4/8/134890404/695094.pdfIn PDF document text
    • https://renikafajuwigag.weebly.com/uploads/1/3/4/3/134317319/betatefusefekepog.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/kizuporowefib/gevibewip.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/38686321315.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/animal_welfare_act_1999.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/list_of_auto_components_manufacturers_in_india.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_off000420af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420AF 4996 bytes
SHA-256: c9967bed899ceac08d22f4a23774c88cc24da7b73b5999c63cf8e29ff38dc082
font_01_sfnt_off000431b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x431B3 12784 bytes
SHA-256: e1f25724557573eb01483e71fc0ef45570de210231c9c9f7a1a72ef5e7f8c195

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