Malicious PDF — malware analysis report

Static analysis result for SHA-256 e180d11367f5f7f3…

MALICIOUS

PDF

79.6 KB Created: 2021-05-21 17:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7ded17b1677dbccc080a90f3ab48dcde SHA-1: b813dd7966eb7a1eabf02203038626d77ee246f7 SHA-256: e180d11367f5f7f3dda462dc293d6cb5e57ac555b9a5a91e592006142b35a944
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a phishing or SEO manipulation attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=clicker+heroes+code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461204/normal_6029392812027.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491439/normal_606dd8d3606e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404984/normal_605553a9d84ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_5fd27ee1ade87.pdfIn PDF document text
    • https://tovexalo.weebly.com/uploads/1/3/5/3/135348509/movatere-wubabenaruvaj-vokujoruzet-nedalo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5fe498fa6d206.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391907/normal_6003ef3253668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461511/normal_605fc186d5d3e.pdfIn PDF document text
    • https://dutajedi.weebly.com/uploads/1/3/5/9/135964159/604861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485457/normal_603ff686e4ac9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412591/normal_60081c47300e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446647/normal_5fceab39d077a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446260/normal_600150a6673fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392869/normal_603865fe3803c.pdfIn PDF document text
    • https://lovemaxo.weebly.com/uploads/1/3/3/9/133997317/6037465.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/murudute/electron_distribution_diagram_of_water.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/aeroplane_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/contents_page_template_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/redovinudotoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/genujerotuziseg.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96A 4788 bytes
SHA-256: b1effdfd6ceb765c8bbd1eee3fa9eb5a54af0a7631404062c3389e823b123328
font_01_sfnt_off000109a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A6 11604 bytes
SHA-256: e4f74b46dc41a9a07432c292feaf32051bca10c5c48d811d1cf44eba465cd0b5

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