Malicious PDF — malware analysis report

Static analysis result for SHA-256 006822a63c37bf62…

MALICIOUS

PDF

76.7 KB Created: 2021-03-03 10:04:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a18c1e370902c775b8272a8fc87522d0 SHA-1: 418aee4a899000e4016e2c0775832f2775629152 SHA-256: 006822a63c37bf6237164078cd25a14b62808ba09ab121833d3893500c85c77f
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/strik?utm_term=how+much+is+a+first+edition+a+christmas+carol+worth PDF link annotation
    • http://rofuxipof.mywebcommunity.org/3088455033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_603f14bfbccf0.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/days_with_frog_and_toad_activities.pdfIn PDF document text
    • https://dipabuxirakilat.weebly.com/uploads/1/3/1/0/131071076/gegajejix_fevuzukumamoxa.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/52100795158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_600fc186152be.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/roralu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_601b519b5466b.pdfIn PDF document text
    • https://notomufibaka.weebly.com/uploads/1/3/2/7/132740278/lotekurobaj.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/lenovo_thinkpad_t430_i5_16gb_ram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_6029040f0d26a.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/25683564050.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/jumedemimo/react-_chartjs-_2_tooltip_format.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/97484612232.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/avengers_hd_wallpapers_for_mobile_free.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/tipizopovobafux.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/9300_cisco_switch_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/49775545175.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/97572220303.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_off0000ef6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6C 5316 bytes
SHA-256: 5ed300aa70d04ac79682afb0873f6c04b3304806ad95012abaa456fdb9c61490
font_01_sfnt_off00010166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10166 10588 bytes
SHA-256: fee46ca25b6671804d0fd953cdfaf50754e0ef3f319f301eab347499d7951a55

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