Malicious PDF — malware analysis report

Static analysis result for SHA-256 36df89d12a0a8781…

MALICIOUS

PDF

94.7 KB Created: 2021-07-12 23:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4c2dbbde459f87de1eb1ef41beb9e668 SHA-1: 67cd7dfb509c7f1dfe0d84a290151fcb5dd60435 SHA-256: 36df89d12a0a8781f78579015d1f9d97c1a3e8c0d861ec469e2f9378394662b9
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a lure related to 'galaxies in the universe' and redirects to a suspicious URL. Heuristics indicate it's a phishing attempt, and ClamAV detection confirms it as malicious. The ML classifier also flagged it with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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://nomylo.ru/square?utm_term=galaxies+in+the+universe+pdf PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e835aa1c6ee137fa14684f/1625830827174/sofizujemadawexusipugiwig.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec9e8c934d360eb28ad02f/1626119820527/the_big_bang_theory_s03_torrent.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9131af807f1e152677aa/1626116401229/55373643631.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e945a1f4fe78435a3bddba/1625900449915/vugudosenararujogiduzinid.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e770ba2e87d320eed90f7d/1625780410763/iq_test_with_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e76bf54e14410b5d336064/1625779189223/piano_notes_for_perfect.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9540b0cbdad4d35075a2f/1625904139904/reading_and_comprehension_worksheets_for_grade_3.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e828464261ba7980643718/1625827398948/36528426575.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7f5657d3b385c94b6997a/1625814373152/rupuviledaz.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7b0bf38ed220952ab536e/1625796800291/42800647352.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111EB 16900 bytes
SHA-256: f2671ebceb3c7294d75b5d6259ca90e42200fa6de1fcf0b1d83d4d4f4967e4a0
font_01_sfnt_off00013e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E08 10784 bytes
SHA-256: f92508de475b98eb8d08dd68f388e4537cd36dc387c2829c07cfe3ee825d1d31
font_02_sfnt_off000156da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.