Malicious PDF — malware analysis report

Static analysis result for SHA-256 24348f357b84f203…

MALICIOUS

PDF

61.3 KB Created: 2020-09-12 21:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 041b5267b9df12bb0e8104877c5b1c4a SHA-1: 782cf1c1403194919090cb8785f9e47c41b2642f SHA-256: 24348f357b84f203d7d94268e51f844674c639adb6260da4f61d48b35827a8fb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to SEO-optimized PDF files. One of the embedded links, https://ttraff.cc/pify?keyword=celula+vegetal+partes+y+funciones, is a known malicious redirector. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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://ttraff.cc/pify?keyword=celula+vegetal+partes+y+funciones In PDF document text
    • http://files.mtacdiamondbar.org/uploads/1/3/0/7/130739789/e71f3.pdfIn PDF document text
    • http://wagefol.dporganizing.com/uploads/1/3/0/7/130775732/4595382.pdfIn PDF document text
    • http://files.stpetersindy.org/uploads/1/3/1/3/131380063/aa5daeec.pdfIn PDF document text
    • http://files.porthuronchurchofchrist.org/uploads/1/3/1/4/131437532/57a348c734136.pdfIn PDF document text
    • http://files.ciaranculliganphotography.com/uploads/1/3/1/3/131384359/kopetaxuzap_xinamafum_mefubove_kirizage.pdfIn PDF document text
    • http://files.archaeospain.com/uploads/1/3/0/7/130775025/pozebavaboran.pdfIn PDF document text
    • http://devotu.mummasonthemove.com.au/uploads/1/3/1/0/131070147/8839088.pdfIn PDF document text
    • http://files.kathrynsantaphotography.com/uploads/1/3/1/4/131438111/3eea38982f7f.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/1/0430/7196/3296/files/7819646984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/number_worksheets_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0490/8952/files/ishq_chunariya_audio_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/druid_circle_of_the_shepherd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4849/3475/files/formal_brown_shoes_online_shopping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4122/4869/files/awas_yojana_ahmedabad_online_form_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/52343587297.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE8D 5248 bytes
SHA-256: 45afb415e6b43a6f114d496b4eaa9529a61b3b0e9fdfe4b2811e8bccd757b288
font_01_sfnt_off0000c08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC08C 11600 bytes
SHA-256: e860b6826c4a74752b7703ba6c76b97483bc6ed1716e570665ed1a50ea68a0cd

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