Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8b4aff87c390a5…

MALICIOUS

PDF

78.0 KB Created: 2021-05-28 10:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 06e5f984437148a93de113b480b05def SHA-1: db43ae3f181a620f35a483cd47dfc29493732257 SHA-256: dd8b4aff87c390a5c85524ac253e0d74d81008374d77cd7436b7f6d713f060cf
144 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL disguised as a 'keto weight loss meal plan pdf' which redirects to a suspicious domain, likely for phishing or malware distribution. The document's structure and the presence of external links suggest it is designed to lure users into a compromised website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jacksth.ru/strik?utm_term=keto+weight+loss+meal+plan+pdf PDF link annotation
    • https://togoritireso.weebly.com/uploads/1/3/4/6/134619717/f276212.pdfIn PDF document text
    • https://dururamud.weebly.com/uploads/1/3/4/8/134846475/707968.pdfIn PDF document text
    • https://wudumimimi.weebly.com/uploads/1/3/4/3/134356267/5671885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_6029951f3aaf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420013/normal_6035eaa82138d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500678/normal_5ffd5684f3625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381531/normal_5fd28b2480499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fdc849c2168a.pdfIn PDF document text
    • https://mopabofigovusig.weebly.com/uploads/1/3/5/3/135319119/nogipewaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_604352df3b0c1.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/4a114e90-4c45-40cf-8613-54ba76130408/kaz_v745a_humidifier_cleaning_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da382809-f96b-4d7d-926b-4b17df626b6d/59169812604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fddde148-ca32-4958-8f18-1fae6cb10b97/lisixubeguxajokejaveker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f728dbd-136a-42ad-813e-f156cd05cd65/93769333313.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd551738-09a7-4bea-be99-c0d4bcd7677f/the_magic_flute_song_list.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_off0000f5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5F3 5420 bytes
SHA-256: 81afa6abe08f484aa05333aeee01c5d7a1ed8817f6d01757592add4463f753a0
font_01_sfnt_off0001085f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085F 10292 bytes
SHA-256: 16a37c8060df6c1ae557d2ea074d400d26f1ef838f78bd9122a98e9aa916c333

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