Malicious PDF — malware analysis report

Static analysis result for SHA-256 550275d9d18c2ca1…

MALICIOUS

PDF

317.4 KB Created: 2022-07-05 13:24:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 90395236edee278596a4db970b2f4e87 SHA-1: 336adce2deaed30e06a7e68371846620dad86c47 SHA-256: 550275d9d18c2ca134ced88b09bdb57a6f9ca5eed06ca732902c0c83685ce551
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7242

Heuristics 6

  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=sample+letter+of+appeal+for+reconsideration+pdf+template+download+word+doc PDF link annotation
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1622592efc0cbb---vigiroka.pdfIn PDF document text
    • https://xezinaruwi.weebly.com/uploads/1/3/4/4/134479948/ranebobilatefe.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1620acecc9890a---mufopasulolidefot.pdfIn PDF document text
    • https://watagogekuzilub.weebly.com/uploads/1/4/1/4/141417923/tetot-nuter.pdfIn PDF document text
    • https://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/nujinuvuvawivutubep.pdfIn PDF document text
    • http://melody-house.ru/kcfinder/upload/files/95428567222.pdfIn PDF document text
    • https://pedudevapo.weebly.com/uploads/1/3/4/7/134719514/a56be8980036b7.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/62432487433.pdfIn PDF document text
    • https://polaria.cz/images/file/40740078390.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/doluso.pdfIn PDF document text
    • https://tizojutatow.weebly.com/uploads/1/3/1/4/131406606/roropewux-dogid-kixuw.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/duseferuvozozedavuga.pdfIn PDF document text
    • https://wamonudikiso.weebly.com/uploads/1/3/0/7/130776885/bixudujonukubi.pdfIn PDF document text
    • https://pupupobinizoto.weebly.com/uploads/1/3/1/3/131384436/94b0e8a9.pdfIn PDF document text
    • http://danies.ru/ckfinder/userfiles/files/43660759342.pdfIn PDF document text
    • https://fevokixesebu.weebly.com/uploads/1/3/0/7/130776230/7893221.pdfIn PDF document text
    • http://xinchenfast.com/upload/file/70827973730.pdfIn PDF document text
    • https://wuzofelokuni.weebly.com/uploads/1/4/1/3/141357699/61f1e957154b2.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/giduxisexelelopu.pdfIn PDF document text
    • http://erbaytag.com/resimler/files/13338675002.pdfIn PDF document text
    • http://dominant.name/userfiles/file/binav.pdfIn PDF document text
    • https://mobamananavaf.weebly.com/uploads/1/4/1/6/141620632/8207496.pdfIn PDF document text
    • https://jumewabob.weebly.com/uploads/1/3/0/7/130775497/0db04.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/33373.pdfIn PDF document text
    • https://rilekivo.weebly.com/uploads/1/4/2/2/142255006/kunopetisafuboj.pdfIn PDF document text
    • http://atomleasing.ru/media/File/fumotojezasisupejav.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/dejup.pdfIn PDF document text
    • https://biditeso.weebly.com/uploads/1/3/4/3/134339176/94704.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/42319179401.pdfIn PDF document text
    • https://fetufuwexoniz.weebly.com/uploads/1/4/2/1/142198138/9b655aa353.pdfIn PDF document text
    • http://xn----7sbqwxdbhblh2h.xn--p1ai/data/file/tenaza.pdfIn PDF document text
    • http://bluebossa.pl/files/file/69865469413.pdfIn PDF document text
    • https://fexeluxenama.weebly.com/uploads/1/4/1/6/141623281/voxovogadasewe.pdfIn PDF document text
    • https://soxulemum.weebly.com/uploads/1/3/4/5/134506395/lifewukodosifigu.pdfIn PDF document text
    • https://fumuzajel.weebly.com/uploads/1/3/4/5/134588097/risad_rilabofipu_pominefi_mebalari.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00049b0b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00049b0b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00049b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B0B 10944 bytes
SHA-256: 0b79ba1683cd378feafdad36f5a8a9b63afe8f2547cba20ff17fed4e67bda265
font_01_sfnt_off0004b463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B463 18720 bytes
SHA-256: 239c2c0bc4041dded8cfa542def5034f94c2ea97a0f7342353c2a554b12ccbf7