Malicious PDF — malware analysis report

Static analysis result for SHA-256 2973700dc777f2a4…

MALICIOUS

PDF

172.3 KB Created: 2025-05-22 03:40:19 +03:00 Authoring application: 376377000w000k000h000t000m000l000t000o000p000d000f000 0000000.00010002000.0006 (via GPL Ghostscript 9.53.3) First seen: 2025-06-26
MD5: 24d0b326c469a36616755d0344d94ddc SHA-1: 480a31325eaffb588605e66a35cea42898f66b34 SHA-256: 2973700dc777f2a4b4128f4accf9f66c112f9eec02aadf6db0fe3af5ddfb3189
86 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating a link to an algorithmically-generated URL, identified as an SEO redirector for phishing. This suggests the document's primary purpose is to lure users to a malicious site. No scripts were extracted, but the presence of a suspicious URL points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0003

Heuristics 5

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://gujewokodafodof.nurepikis.com/202952835814435265218029241820496432408699?fopumuxukojowebexoxudikekegefogemupanasufabaweludanejorapote=nizigozakumudomukuzededefowunemotivavuguxowavoxazudosowepivejowajanisutufedafiraxuwikevonovikewizalegusuvutodufafemisudivivunelokufurakeditomudemobulaxikuxujurozilolamomodapafumizinevizodelujalelumamopukan&utm_term=livro+de+ciencias+do+5+ano&popukonijesebunazovamumufuxejakelewimorevubebokofazujinebumozorabinupojinulodajoxutipik=kefosoxogonetugigolidafakegadazeziwigozipemasogovixolojikatuvutonoberajawukoluzubusikogidogibibudowojugedafiruzarixaxopoxowo)/Type/Action In PDF document text
    • https://gujewokodafodof.nurepikis.com/202952835814435265218029241820496432408699?fopumuxukojowebexoxudikekegefogemupanasufabaweludanejorapote=nizigozakumudomukuzededefowunemotivavuguxowavoxazudosowepivejowajanisutufedafiraxuwikevonovikewizalegusuvutodufafemisudivivunelokufurakeditomudemobulaxikuxujuPDF link annotation
    • https://gujewokodafodof.nurepikis.com/202952835814435265218029241820496432408699?fopumuxukojowebexoxudikekegefogemupanasufabaweludanejorapote=nizigozakumudomukuzededefowunemotivavuguxowavoxazudosowepivejowajanisutufedafiraxuwikevonovikewizalegusuvutodufafemisudivivunelokufurakeditomudemobulaxikuxujurozilolamomodapafumizinevizodelujalelumamopukan&utm_term=livro+de+ciencias+do+5+ano&popukonijesebunazovamumufuxejakelewimorevubebokofazujinebumozorabinupojinulodajoxutipik=kefosoxogonetugigolidafakegaPDF link annotation
    • https://gujewokodafodof.nurepikis.com/202952835814435265218029241820496432408699?fopumuxukojowebexoxudikekegefogemupanasufabaweludanejorapote=nizigozakumudomukuzededefowunemotivavuguxowavoxazudosowepivejowajanisutufedafiraxuwikevonovikewizalegusuvutodufafemisudivivunelokufurakeditomudemobulaxikuxujurozilolamomodapafumizinevizodelujalelumamopukan&utm_term=livro+de+ciencias+do+5+ano&popukonijesebunazovamumufuxejakelewimorevubebokofazujinebumozorabinupojinulodajoxutipik=kefosoxogonetugigolidafakegadazeziwigozipemasogovixolojikatuvutonoberajawukoluzubusikogidogibibudowojugedafiruzarixaxopoxowoIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://ns.adobe.com/iX/1.0/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://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_011_off0001d3f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D3F0 1049600 bytes
SHA-256: a47c8d80023153dde6bcdab322b746bc81c0e192bd1ed7c70a4480f1275261aa
font_00_sfnt_off000280e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x280E0 10476 bytes
SHA-256: 5294ae6f93fc8c52bfb1b9fae35f3214bb715fa90d22320a99281b759704df39
font_01_sfnt_off000299b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x299B7 1676 bytes
SHA-256: 6194490337abd1c68bd3a90fdfb0e280d41926d407519c458c8968f20dad8e00

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