Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdc10f6f298163a…

MALICIOUS

PDF

39.3 KB Created: 2020-08-13 00:40:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 881f5bf770ab8d5c47c17d5328135e45 SHA-1: 02bbe0207a42a372398cf9584433d07cb199a43a SHA-256: ccdc10f6f298163a73845c860c316343a996b71b6215766f6ece79f3482be5f8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary malicious link identified is https://ttraff.ru/pify?keyword=common+core+math+workbook+grade+4+pdf, which is presented as a download for educational material but likely leads to malicious content. 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.ru/pify?keyword=common+core+math+workbook+grade+4+pdf In PDF document text
    • http://kaletiniw.rightwordswork.com/uploads/1/3/2/8/132814930/6577039e6a.pdfIn PDF document text
    • http://files.dltyoga.com/uploads/1/3/0/7/130775393/jukaraz.pdfIn PDF document text
    • http://ninifos.ucfsrilanka.org/uploads/1/3/1/6/131637814/7089605.pdfIn PDF document text
    • http://files.mobile-mower-fix.co.uk/uploads/1/3/2/6/132682627/95e5e2e9eaa.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/1/0427/9818/6652/files/suwagizapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/dumadubirobibamem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3389/files/monster_encyclopedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/60905179850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/antgona_dominio_publico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/fifelomizur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/11799493554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/rubevolazododugaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0412/files/acretismo_placentario_ultrasonido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/timulufokinutajoso.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_off00005a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A26 5648 bytes
SHA-256: 280eced9aea4d18ccd21ecb6a6b9657a665ac3f7319207259866d71f23fd31e7
font_01_sfnt_off00006d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D49 10288 bytes
SHA-256: b486ee276502211c75a0f8a0f9caa6adad5b360c646020355640f9458470cc00

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