Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ecabf28a0352cb…

MALICIOUS

PDF

112.8 KB Created: 2021-07-14 08:15:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e05c2bd1f10248096c05a8f64f38967c SHA-1: 7860f1aae1aa4cbc4b209a8be7ce27f6dc7fdbed SHA-256: 29ecabf28a0352cb7e1fc236c94310f8c5bb49e6aebf5bc5d0792791a98234f8
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as a phishing trojan and ML classifiers indicated a high probability of maliciousness. A heuristic identified an image lure linking to an SEO redirector, which is a common tactic for phishing or malware distribution. The embedded URLs, while marked as benign, are part of the redirection chain. No scripts were extracted, but the overall structure suggests an attempt to lure the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://feedproxy.google.com/~r/razvivatel/yapz/~3/nCRFBnYrBHY/square?utm_term=body+of+water+north+of+canada PDF link annotation
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e83faaf518dd358f67f3f5/1625833386636/staph_infection_home_remedy.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee31f77d49fb55d626a600/1626223095431/xilepon.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7e0b4dbc52028c83fbc8a/1625809076699/kureselerabekawumipululi.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80f58afd06e4982ec65bc/1625821016650/davotimujusekezaxi.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec77d3dd2ac847ff7d64f0/1626109907945/fire_and_rain_guitar_lesson.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecf94d6bb85f4a8d8137c0/1626143053626/5849833020.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e941db8915684aa53e463c/1625899483088/xibigobaxijejas.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb6ccbe0ee20fe32f17d8/1626126028789/pewujomawiregidixerijanif.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8afd7a1add4dee203fb4/1626114813651/23160821443.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edbaf61e342110cebda16d/1626192630425/12475922004.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee352df6c772366d2d7ab5/1626223917250/teaching_and_learning_process.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 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_off00015712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15712 18188 bytes
SHA-256: dbd611d241e9c966a0f2904bd219b8df11caa15d21d19b1177cc45136f7d5b16
font_01_sfnt_off000186c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186C6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19EDD 10520 bytes
SHA-256: c8f1ad98dd14b130135999936e92aefff4d5e697cc1aad8bb3301c428e58d25a

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