Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2ca176e7aa57af…

MALICIOUS

PDF

83.1 KB Created: 2021-05-28 22:21:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5839b264f9f5ad1d0d88ffc141bc81ac SHA-1: 588e859e8f0aa75b5e77163aff9feea7595f3d10 SHA-256: cd2ca176e7aa57af0ff0c2eb8c2b48053e67f1338bdec8f0d8fdeadbdb81a4ba
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://baarspo.ru/strik?utm_term=luxor+museum+entrance+fee PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452850/normal_5fedaa5beda5b.pdfIn PDF document text
    • https://xukejexen.weebly.com/uploads/1/3/4/4/134480318/714925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_6019834dcb676.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483337/normal_5fde171f981fa.pdfIn PDF document text
    • https://magijomolalol.weebly.com/uploads/1/3/1/4/131437319/4153158.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503214/normal_5fc6b92d09d0e.pdfIn PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/9946024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373281/normal_60044dc7d9ac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_600c9ce65165e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485172/normal_605c3fc614325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382639/normal_6040e3427ac24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450141/normal_604720d5c43c3.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://uploads.strikinglycdn.com/files/6ebd7155-e8eb-4884-bfa1-20618e98fae4/nofibekezoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8827ecd-bd83-4058-b952-d6675bedec9b/peace_like_a_river_paul_simon_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/382ce8d6-740d-4d96-ae9e-94d232ee205c/2644183797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2d9430-ca67-4c3a-8549-756bb525b359/mogelufuropoberexaseno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94b83fd4-fbe7-4af2-a4c8-2d1649a76a83/23796766969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0312ae0-525d-400a-87f2-71d89d953a3a/80810026917.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_off0000f9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D8 4836 bytes
SHA-256: f457942d46052cd8951bd7df1610c993cceecebaab7a31ac7f1b4839bd261973
font_01_sfnt_off00010a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2C 11512 bytes
SHA-256: fc30e78db114226f841cbc4ba821e6438c2e680be204620992279a1709dd8239
font_02_sfnt_off00013167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13167 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.