Malicious PDF — malware analysis report

Static analysis result for SHA-256 70dba58f0cc67878…

MALICIOUS

PDF

53.0 KB Created: 2020-08-07 02:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d11d07540b0c714dc93f236e249de63 SHA-1: ccbe9d967e6f85ea340ef4dc2d343ac27fa01c3f SHA-256: 70dba58f0cc6787829fed3aa8146b0ba85b3e71c3de3a28316ac77aac285ed85
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector infrastructure, suggesting a link farm or phishing lure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=bar+chart+questions+ks3+pdf', is identified as malicious. This indicates the document's purpose is to redirect users to potentially harmful content, likely for malicious advertising or phishing.

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=bar+chart+questions+ks3+pdf In PDF document text
    • http://files.lasalleyouth.ca/uploads/1/3/1/1/131164112/a6f2394.pdfIn PDF document text
    • http://josineko.tiffanymckenzie.com/uploads/1/3/0/8/130813042/wukele.pdfIn PDF document text
    • http://files.wichitajoyorganics.com/uploads/1/3/1/4/131437864/kenuwaxiwitetozole.pdfIn PDF document text
    • http://sudagub.wildflowerartist.com/uploads/1/3/1/4/131407558/8993276.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/1/0435/8170/2301/files/88182767009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/nevodomiruwitajuwasuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/aprendizajes_clave_cuarto_grado_primaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/zokizowapototu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/nomuvaleditalulabev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/simon_ielts_writing_task_1_academic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/11135749716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/gedaxuronepakuduxunimip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/27061471670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2464/5272/files/ipl_2020_schedule_full_match.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 4

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_off00008751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8751 5612 bytes
SHA-256: ceb783bd70d54eaa288f4e7a157ff0d2dc5b983cefd38ec3b7a748787163bf7d
font_01_sfnt_off00009a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A62 14320 bytes
SHA-256: cc67cd2e5ca225461c9cebd78c8822db4daaae6ab9df5e04d06f2d602085cd8a

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