Malicious PDF — malware analysis report

Static analysis result for SHA-256 624fd7a840d80afc…

MALICIOUS

PDF

81.8 KB Created: 2020-10-10 10:44:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-29
MD5: ba18d32ca281d6e0ecd3bebb1d129b2a SHA-1: 0f360eb6f162d7cbb005d577e179ba4251fdfff7 SHA-256: 624fd7a840d80afcf0ff3d5747f08a87ad665c88c5062798cb58fef8fbc31f0d
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://ggtraff.ru/strik?keyword=bmw+x3+wikipedia+indonesia In PDF document text
    • https://site-1038494.mozfiles.com/files/1038494/33343400499.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/73924249127.pdfIn PDF document text
    • https://site-1043767.mozfiles.com/files/1043767/wawuxep.pdfIn PDF document text
    • https://site-1039733.mozfiles.com/files/1039733/bogatexumukoluzireme.pdfIn PDF document text
    • http://files.peteroseproductions.com/uploads/1/3/1/1/131164185/dokiku-fusepoxuvesi-rinijugam.pdfIn PDF document text
    • http://files.andrewmartinsmith.com/uploads/1/3/1/1/131164479/11c786.pdfIn PDF document text
    • http://wutex.alpinechurchofspiritualliving.org/uploads/1/3/1/1/131163898/wokajafifoku.pdfIn PDF document text
    • http://mafed.renewalskinandbody.com/uploads/1/3/1/6/131637136/5614732.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/1/0432/9409/7576/files/guparez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1617/7832/files/stoner_glass_cleaner_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6926/3003/files/hyper_tough_1700_psi_pressure_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3989/9039/files/enzymes_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/5418/0773/files/the_new_deal_affects_many_groups_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7937/1414/files/nifaxobeveloduromepup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4557/7116/files/craigslist_medford_oregon_free_stuff.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
    • 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_off0000cce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE2 5412 bytes
SHA-256: 21d94ac1715020aeb85a1df90016251df5d95173e7cdc05a7c6514b4c316d000
font_01_sfnt_off0000df57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF57 17460 bytes
SHA-256: 4108bdf1f38ee60dc2c0d4c7b90966cd0a23cd3f5e3a58f886eeaf352cfd1ec1
font_02_sfnt_off0001150c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150C 20588 bytes
SHA-256: e0cc796e7e87d35865a3a68794dfefd287e803849841f39f49bf1fb4f6be013f

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