Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca4e4a516e41705…

MALICIOUS

PDF

59.7 KB Created: 2020-11-17 16:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 351ef64537a30c432a20cdf614f96696 SHA-1: 4a5db38c5bd8f84c98baaec71811d1baf5a357ae SHA-256: 0ca4e4a516e41705c9833cf19af77d15a47fa4c47a09c6d510103d6b4fe1f093
254 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 as malicious, including a redirector link and a link farm designed for SEO manipulation. The primary malicious URL identified is https://ggtraff.ru/123?utm_term=all+clad+waffle+maker+drip+tray, which is used to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to the redirector URL, suggesting an attempt to disguise the malicious intent as a free download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://ggtraff.ru/123?utm_term=all+clad+waffle+maker+drip+tray In PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/gelerugubo-todovawop-migireda.pdfIn PDF document text
    • https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/381492.pdfIn PDF document text
    • https://vimikipemaw.weebly.com/uploads/1/3/4/3/134331773/sesajaresegexuvopog.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/2707024.pdfIn PDF document text
    • https://dikefurilixi.weebly.com/uploads/1/3/4/6/134684794/tipapebanu.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/muxewokemepa.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/2000560.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/bushnell_banner_3-9x40_scope.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/nijarevote.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/opposite_of_summer_solstice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c427688e-14e9-457c-bf88-05876502d198/jeff_nippard_glute_hypertrophy_program_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/31581218357.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/63953926430.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/28966596050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8526abc-7d9f-4008-9fca-199c66356399/mekilawokivaxemokudaxuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/law_of_attraction_in_hindi_download.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_off0000af4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF4F 5368 bytes
SHA-256: 7e24d86aed2243ab4bb1217acd2798d4ae86c69e03916db10ce660befacf20f7
font_01_sfnt_off0000c19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19C 9524 bytes
SHA-256: 4cd96c917c53931395437c1d5cfd82cd3bc6b7b995a7fc354d87b1418cb5eee5

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