Malicious PDF — malware analysis report

Static analysis result for SHA-256 962564bd48fb7bac…

MALICIOUS

PDF

42.7 KB Created: 2020-08-10 12:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fb1dfab0fa527afb7be674ad58f625c SHA-1: 905f056b7d489c6020f68a65a335aff4c66ec934 SHA-256: 962564bd48fb7bac2669934001c5254a13ea1ab6284a7ca5e22d4b37238a7e13
202 Risk Score

Malware Insights

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

The PDF file contains a deceptive call-to-action button and embeds multiple links, including one pointing to a known malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=free+calligraphy+worksheets+printable+pdf, is designed to lure users with the promise of free worksheets, but ultimately redirects to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended for SEO manipulation or to obscure the final malicious destination.

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.com/pify?keyword=free+calligraphy+worksheets+printable+pdf In PDF document text
    • http://files.mcmillansj.com/uploads/1/3/2/7/132712355/1580116.pdfIn PDF document text
    • http://files.jwhumbertinc.com/uploads/1/3/2/6/132695569/mepupukelowuna-pedipopez-fitiwusaz.pdfIn PDF document text
    • http://files.startxbenefits.com/uploads/1/3/2/6/132683328/9979d7e4740838.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/1/0430/6354/1917/files/buwinoxitalewujufelex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/newark_weather_radar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/12291594160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/rokizizenuvijuxekejadawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0914/7043/files/24757831496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/wazasajipepaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/tenejokosulajabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/misewusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wesani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/72239210468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1603/6249/files/86197148184.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_off00006677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6677 5772 bytes
SHA-256: 8b8688df71f5b116186b179713f685ab6b8c9624556169ba6a68090a1cf1bc9b
font_01_sfnt_off00007a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A28 10404 bytes
SHA-256: bf3dbeab143d8a7e068e41a7c18ae238c4523ff284e28134cab0171ceb9425fc

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