Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e984d80c12d127…

MALICIOUS

PDF

72.1 KB Created: 2021-02-08 17:24:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 97e55b34fd74ff247a211c32a4377540 SHA-1: c00c575f434d594d6d34bce354c1f9b391390b3a SHA-256: f5e984d80c12d127937f8b895b5cd364a043ad25c91f8a094495e293529e1298
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious and likely phishing-related. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The presence of embedded URLs and the overall structure indicate an attempt to direct users to potentially harmful content.

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://crophysi.ru/aws?utm_term=atkins+phase+1+food+list+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465269/normal_5fc8512036e61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444850/normal_601f8fc59305e.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/UeiiRMc/botal_sharabi_dj_mein.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/cYgheid/80514705469.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/fZjjhdG/12357677150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_5fe7c9f408211.pdfIn PDF document text
    • https://poxuweke.weebly.com/uploads/1/3/1/6/131606533/2270879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485015/normal_5fdc8105961f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5fda87905b327.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484107/normal_5fefd10775c6b.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/zhaiaoo/50401563508.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/hcNTgdm/univision_41_noticias_numero_de_telefono.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/ijdii9l/cardboard_file_boxes_walmart.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477916/normal_5ff3adb76e578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD85 5136 bytes
SHA-256: 821984228586cc82fd062dd1913fefeb30f369a2d7b04089aea6f7c970cd2a08
font_01_sfnt_off0000ef0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0A 10908 bytes
SHA-256: f0b3c92d78d1e9d5d1dd8e43de12035d4ef5cec7bd83ebdbbe778a7b997f802c

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