Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccfdd21a2fe460cf…

MALICIOUS

PDF

44.9 KB Created: 2020-08-25 16:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa82c1d1f61262e50483c41f796a2a49 SHA-1: 8a037663c6dc6b2f6877164485fb072fcf66b9b0 SHA-256: ccfdd21a2fe460cf9d9be0de7b27242079c8fe200309ef9de2042c7503617dce
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, with one specifically pointing to a known malicious redirector. The document body contains a title related to 'lol support item guide' and the authoring application is wkhtmltopdf, suggesting it might be part of a link farm or SEO manipulation scheme. The presence of numerous Shopify URLs, while many are benign, could be used to host malicious content or as part of a broader distribution network.

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=lol+support+item+guide In PDF document text
    • http://files.westernwc.info/uploads/1/3/0/9/130969300/9471533.pdfIn PDF document text
    • http://nijasim.realpeoplemedia.org/uploads/1/3/1/8/131857315/9182720.pdfIn PDF document text
    • http://files.tionalee.com/uploads/1/3/1/4/131437318/90ba44f7.pdfIn PDF document text
    • http://files.ahzusamoyeds.com/uploads/1/3/0/9/130969728/2936508.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/1/0432/0477/2000/files/zugimeguxabosusomeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5901/files/11956504615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/berliner_platz_2_neu_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/91406197236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3556/files/zefifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5534/1717/files/javascript_array_find_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8670/8890/files/jafumon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/70446321087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3973/0336/files/x96_mini_android_tv_box_dstv_now.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/4259261214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/91633084765.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 7

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_off000072c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C6 5008 bytes
SHA-256: a80cc04e9f0110eb5d01b6aaaaf3e673db3c3e8c49f3437ef81258680ba2fc06
font_01_sfnt_off000083bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BC 10100 bytes
SHA-256: be4188715a4c8eed35824fd3c70a33461fe7f4ea2039892204226595a909d802

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