Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dba947b4598934…

MALICIOUS

PDF

52.0 KB Created: 2020-10-05 03:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: ac1624cac5616acd8d3b64645574b43c SHA-1: 274e4ae33b50a550c3dbf72b8f6a297f62254395 SHA-256: c5dba947b4598934feaacbac73fe09db3efc563970f309315b5c122a40e1c316
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://gettraff.ru/strik?keyword=smps+circuit+diagram+with+explanation In PDF document text
    • https://site-1038553.mozfiles.com/files/1038553/mudevexad.pdfIn PDF document text
    • https://site-1044113.mozfiles.com/files/1044113/18647853083.pdfIn PDF document text
    • http://files.rickrebelsrock.com/uploads/1/3/2/6/132695839/8171851.pdfIn PDF document text
    • http://tewet.calblazebaseball.com/uploads/1/3/1/4/131407226/xavudukub-jadaxese-pativulikam.pdfIn PDF document text
    • http://files.hemsworthgs1921.org/uploads/1/3/1/3/131384436/nomafi_zusomolipese_lefobelireloli.pdfIn PDF document text
    • https://site-1038337.mozfiles.com/files/1038337/40466393132.pdfIn PDF document text
    • https://site-1036799.mozfiles.com/files/1036799/rusukasodujafoxo.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/16248409512.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/53597238359.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/tubemate_latest_version_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/checkers_speech_apush_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/8863/4790/files/nyc_doe_school_calendar_2020-21.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4186/6403/files/41651664001.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8B 5752 bytes
SHA-256: 7a7a39a6bda145814e5237a9e09dcf41e1dc0b7c1ee359f74f09c39f357a3e5e
font_01_sfnt_off00009f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F06 10536 bytes
SHA-256: 62d5f80c3c989bf3f9577166911668d38165276c0579f380886bf901d8bfdfcc