Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fccb2fc2d128a6…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 05:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69209571b747c372e5a63c1440c017ec SHA-1: 02fd9a02e75f0bc741ebbd880d77f1f8094eb41a SHA-256: 97fccb2fc2d128a65bbb15d2ba5a711a71e9ff5c2ab4be77fa7afd0af4d2f274
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=holes+worksheets+printables'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a PDF link farm. The primary malicious URL is the most critical IOC.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=holes+worksheets+printables In PDF document text
    • http://nefusima.nmffa.org/uploads/1/3/1/0/131069934/1514188.pdfIn PDF document text
    • http://gopojudi.wcstructural.com/uploads/1/3/1/3/131398134/76f9fa5.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/1/0429/6006/0567/files/4199877323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/xevanelitipesebid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/john_deere_2040_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2843/7409/files/58043112886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5403/0231/files/17858729759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/kuzuloje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/45849664688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5265/files/kevuvojal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/34367823097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/netgear_extender_ac1900_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/logo_design_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0383/7591/files/63487469270.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 3

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_off00005d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D10 5164 bytes
SHA-256: 11b73baa3817f018cdc4abd8068121c1aa7db7a0f6806d69e1c34d693ee962df
font_01_sfnt_off00006e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9D 11648 bytes
SHA-256: ddfd2a340be8adbd6bba822f7052ba1d555761042d085e6db86325a08da122a1

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