Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d3f7dcb6ffdec7…

MALICIOUS

PDF

83.3 KB Created: 2021-03-03 00:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 76a03b75776be9ad7bdc62120ada38f2 SHA-1: 3b5fd62762446f80bd2fbabbc7bcf4237d55c045 SHA-256: 07d3f7dcb6ffdec7bfdfa90941a1a1543746a26b313c99612adffd2c5c53809a
196 Risk Score

Malware Insights

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

The PDF document contains a lure related to Excel calculations, but the primary function is to redirect users to a link farm. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, and the PDF_SEO_UTM_REDIRECTOR_LINK heuristic points to a redirector URL. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware.

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
  • 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.
  • 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://jumiwimov.ru/award?keyword=how+to+calculate+marginal+distribution+in+excel PDF link annotation
    • https://jefanumu.weebly.com/uploads/1/3/4/8/134889008/6126346.pdfIn PDF document text
    • https://soneputud.weebly.com/uploads/1/3/1/4/131411150/woxomatokatusiv-fezozemejomiro-vokeruviwik.pdfIn PDF document text
    • https://gipoxafevipetim.weebly.com/uploads/1/3/1/3/131398102/nazatonudijid.pdfIn PDF document text
    • https://tadonajates.weebly.com/uploads/1/3/4/3/134319020/6311298.pdfIn PDF document text
    • https://nivufojafofe.weebly.com/uploads/1/3/4/2/134265756/lorisi.pdfIn PDF document text
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/2a4721d6ac7d1.pdfIn PDF document text
    • https://woteginawewe.weebly.com/uploads/1/3/1/3/131379999/tilubiruludilate.pdfIn PDF document text
    • http://magic-world.site/eyewitness_report_formatg0id8.pdfIn PDF document text
    • https://woxudozu.weebly.com/uploads/1/3/6/0/136042517/8561437.pdfIn PDF document text
    • http://excschool.ru/bd_full_mapdqwo0.pdfIn PDF document text
    • https://zaketedojerobi.weebly.com/uploads/1/3/6/0/136023974/paxiwires.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/lopadivupudexa/belabudazozowarasexum.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/kedoxit.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/is_fossil_a_good_smartwatch.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/math_shape_pattern_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/84847445735.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/59566096143.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6C 5520 bytes
SHA-256: 1eb66cdccb26fca8cbe27d1b9a4d3b040b5765cf64d0b274b8db594812a003a8
font_01_sfnt_off00010129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 11960 bytes
SHA-256: e8e9fd2a011af1457090e382437c586e4a5df186cb67ac260bb2df36e6bd46bb
font_02_sfnt_off00012a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A62 16172 bytes
SHA-256: e2fb3a1b2483d799e8f5f490511d07b11c9c6e7e6ba0de0c65de74facb810999

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