Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c2a302b057566e…

MALICIOUS

PDF

76.2 KB Created: 2021-01-17 04:48:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: da2cc233fe3b11d3c58648ac297ddde1 SHA-1: e651b0a221bd4c47d92493734a265529072a47dc SHA-256: c6c2a302b057566e06c3453e094eb682e4f8dd9c986de88a457b651247aab35e
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 0.9998

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://traffset.ru/123?utm_term=belly+dance+outfits PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453102/normal_5fc60334b254c.pdfIn PDF document text
    • https://site-1166675.mozfiles.com/files/1166675/tibunawoduje.pdfIn PDF document text
    • https://vixozomaregug.weebly.com/uploads/1/3/1/3/131398278/d90f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_5fbee4af56033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5f98248ed826a.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/jgigjIa/judumiloxuxax.pdfIn PDF document text
    • https://juwememuju.weebly.com/uploads/1/3/4/5/134523402/954958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454559/normal_5fbd187272a75.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/gazijewevan/environment_pollution_paragraph_popy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bagirirovisepofepevu.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/67104532147.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/feridumezinaba.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/behringer_x32_compact_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/punozun.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_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 5068 bytes
SHA-256: 3252945d36add385b031a41488d8d0b59fbeaa4b36f70c1ba0b979fa6d03cadd
font_01_sfnt_off0000fddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDD 10988 bytes
SHA-256: bf9b6871b43ea71fb9dd13fe53f3e9cf6acc712e3af6c5f39cb3760b1a2ff46c

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