Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e076aeffc7192a…

MALICIOUS

PDF

80.5 KB Created: 2020-12-09 09:35:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 02cb2837597955fc148df8f731c2143d SHA-1: daf0eb15f035308f8f0cb1e7b740ebe093b8d7fd SHA-256: 49e076aeffc7192a060e2c95f8e3d02801ae7c25f69c811940ce749997efa40f
156 Risk Score

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://trafffe.ru/strik?utm_term=fallout+3+national+archives PDF link annotation
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/df2d17c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/puwogupumobukolerar.pdfIn PDF document text
    • https://ronifevux.weebly.com/uploads/1/3/4/7/134737402/soduresevopajogex.pdfIn PDF document text
    • https://zaronubiguxade.weebly.com/uploads/1/3/4/6/134685024/damufu.pdfIn PDF document text
    • https://juxipidupe.weebly.com/uploads/1/3/4/6/134694928/mifosogegevug.pdfIn PDF document text
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/gafuwokasexur.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/zirilapalir-bisojexowesomes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pusolefosex/la_blanda_palabra_calma_el_enojo.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/ximigele.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/love_and_life_billings_method.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf0dc30a162e0c520c2e/t/5fc7dd9912b0cc7797450984/1606933913487/syberia_ps3_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b8adbdb33045eee328c1/t/5fcb8bf9a3bc3d1915305375/1607175162653/25924051853.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/472306703.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE507 3080 bytes
SHA-256: 0fcef192c95d6fd4d5333de3e5f0a04c8525a73f6e29f4febd37223f58d6e746
font_01_sfnt_off0000f010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF010 4948 bytes
SHA-256: 02713742dd9d3b4e80e09ba0c59550da69d525924b7aa9239fb17b26372ef16c
font_02_sfnt_off000100d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D5 11416 bytes
SHA-256: 743b86a391559ff18f975827c00f1449e330a5b15b037aee4d3087c740336acb
font_03_sfnt_off0001264c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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