Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ce78e48b35482aa…

MALICIOUS

PDF

74.2 KB Created: 2020-11-27 02:41:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 93ac348308e8515895e44bf31587a2c4 SHA-1: 165ef4e8dd6e90307900dab2317681389a261788 SHA-256: 8ce78e48b35482aa4e966cce829633037e2abc1cf17f065426033713be7c708e
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF link farm'. The primary URL, 'https://traffset.ru/strik?utm_term=what+is+botany+bay+famous+for', suggests a potential phishing or traffic redirection scheme. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. No scripts were extracted, but the structure indicates a malicious intent to direct users to potentially harmful external sites.

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://traffset.ru/strik?utm_term=what+is+botany+bay+famous+for PDF link annotation
    • https://lezunodukulo.weebly.com/uploads/1/3/4/3/134341823/4224921.pdfIn PDF document text
    • https://romesezex.weebly.com/uploads/1/3/4/6/134605020/a87766e8b2f.pdfIn PDF document text
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/2583b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383146/normal_5f8f5220cb101.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/xetezarozoforaboron.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c12c146-f123-43e1-917c-4be0d1cb6426/brinks_driver_messenger_salary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32009eb5-d54e-423d-a731-79f173d839f7/structural_steel_drafting_and_design.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47eefba7-309b-4963-afb4-ddc0d68dd6ca/rivokojisofager.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42793a18-7480-44e2-ace3-1f325cbdbab3/73871481194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37141f4-3595-443c-bdce-d74cb3a21712/16258709013.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/sevuvesezupoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9faa2c-169d-4774-a779-b911fc997688/flame_imp_witchery.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_off0000e2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 5232 bytes
SHA-256: 59bd1eba8193df7fb2f004ef3032e9659755278315457e00cbc404e244c06047
font_01_sfnt_off0000f492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 11928 bytes
SHA-256: 87c012f325b133c75673ee372fcc401c2d3722385085d063ae9f9d04588028fa

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