Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16cd2c49ca43125…

MALICIOUS

PDF

67.5 KB Created: 2020-11-14 06:18:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b86478f06131d991262b26eab4093c86 SHA-1: 6f03238416bb862389fb8c6d9e506dc803ffe082 SHA-256: e16cd2c49ca4312536cf7217c47333612aa4860570dd3a4b66ec04e1ed431458
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 0.9998

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/strik?utm_term=wayne+dalton+quantum+3312+manual PDF link annotation
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/vuzawom-fewiduvigafe.pdfIn PDF document text
    • https://belonimilulufaf.weebly.com/uploads/1/3/4/4/134403367/fexopapemo-radoxuxojetem-gudowejes-ribiwozeju.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/ketusenonaduso.pdfIn PDF document text
    • https://fuxomuvepanagal.weebly.com/uploads/1/3/4/6/134611725/634557.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/samesuseliju.pdfIn PDF document text
    • https://lisunudutiz.weebly.com/uploads/1/3/4/5/134530231/bonuvuxirimok_munugeto_fozupusu.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/fad7f7.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/ditiruz/65620114246.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/14890145174.pdfIn PDF document text
    • https://s3.amazonaws.com/pofumapetat/chim_se_di_nang.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/eldritch_guardian_build.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/futewetetuno.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/belajar_rumus_excel_vlookup_dan_hlookup.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/47968980102.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF08 5120 bytes
SHA-256: 1637aa39b6c40074b7bf557d370e150ab8451d4bf19afbbb8e375b401e9c06f3
font_01_sfnt_off0000d074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD074 10176 bytes
SHA-256: ecf0024ac6526bb6b16e71a3f2c23e60e5e06ac37826d8b728840de22a11feff
font_02_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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