Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01f76a99e332006…

MALICIOUS

PDF

78.4 KB Created: 2021-01-06 12:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7389ea18d2fb83c87b568b36d5d53e62 SHA-1: b4f6979650a1ce750dfef659f0880ba0b83fac91 SHA-256: d01f76a99e33200668524917519b1c53a469e7de958459181fe9234753fe23b1
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, many of which point to other PDFs, suggesting a link farm or SEO poisoning attempt. One of the extracted URLs, 'https://trafficel.ru/123?utm_term=ark+kill+command+player', is flagged as unknown and is likely part of the malicious infrastructure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/123?utm_term=ark+kill+command+player PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5f8f7812cbbce.pdfIn PDF document text
    • https://bonesinidojesu.weebly.com/uploads/1/3/4/5/134591006/6b222c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485329/normal_5fb825cb0b3bd.pdfIn PDF document text
    • https://seruborakumew.weebly.com/uploads/1/3/4/8/134849990/xerosavuxisawu.pdfIn PDF document text
    • https://zilakakazaxo.weebly.com/uploads/1/3/4/4/134442972/2081178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5fa273d265f69.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/9f631dfb-ee60-4d4c-9c10-1e143e75f1d2/transitive_and_intransitive_verb_pow.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/hyphens_compound_adjectives_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24ad6834-246c-47c1-831a-54bc9b46d94c/68686476314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a461c8-8199-49f0-8d81-9e6410599a3a/vanilla_sugar_cookies_for_decorating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2844675e-7a80-43f0-a5fe-f02b865d5d57/terejolamuzovavejabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79ce01f5-0a94-4193-afb0-813c82005a5e/joriro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89aa4d11-61a7-4feb-8fa7-16e735b8c80a/kufetazololabew.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/bitdefender_mac_free.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_off0000f798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF798 5196 bytes
SHA-256: 60dc794c72658a78263f42d41e3d06ad6d13d7112a44a6bd81498c7e038bcec1
font_01_sfnt_off00010938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10938 10116 bytes
SHA-256: a1eb73590633e0dcf5fcc7063521698944b60fefd191f6c19e7601084c9d63f4

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