Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc77fe489129aea0…

MALICIOUS

PDF

112.5 KB Created: 2021-07-15 11:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 7098c34d8e6fd947ebd6cf9a4fa7dbcc SHA-1: 8a7d2692759c9dc394d8a415842847788682bf96 SHA-256: cc77fe489129aea01ce73beb7b72f78064f4fcb5a81be84251a093511987ac9d
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded URLs that point to external websites. The ML classifier flagged this PDF as malicious, suggesting it is part of a phishing or social engineering campaign. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7457

Heuristics 4

  • 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/pL_UGxDroB4/square?utm_term=a+postsecondary+school+that+does+not+have+a+set+of+admission+requirements PDF link annotation
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecaad3af807f1e15293e23/1626122963971/lyrics_when_we_were_young.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efe6551b42e761db873be8/1626334805870/86358463993.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec92177dc7460dd09c01c4/1626116631477/43647438983.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec7a0fbdd82073f6fe0dc0/1626110479672/12384354777.pdfIn PDF document text
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec991c77250868136eb1a5/1626118428349/janavaluxemif.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e917915ebba154a8fbfbf0/1625888657938/low_turbidity_water.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_off000154ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CC3 11292 bytes
SHA-256: c6f5261fc4574e0a105756b2afb0ec4d048e49304167919e275bbf9e043b1b8d
font_02_sfnt_off000186f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186F0 17600 bytes
SHA-256: 0188a809d383c673cd9b2de64f425bba35688de79de8d743534639ec3564824c

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