Malicious PDF — malware analysis report

Static analysis result for SHA-256 56b3f3efec37f1f8…

MALICIOUS

PDF

39.3 KB Created: 2020-08-24 22:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 829378f59b504d09e3b8e284a71142e4 SHA-1: de6fa0ded422541ddff34c547589807d8eb546c4 SHA-256: 56b3f3efec37f1f8a133ee5e6632d44c377b2c16ce13c79c3e82d039f8949aad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a congratulations letter. The document also features a large number of embedded links, many pointing to Shopify domains, likely as part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=congratulations+letter+template+for+winner, which is designed to redirect the user to further malicious content.

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=congratulations+letter+template+for+winner In PDF document text
    • http://sojikupa.futurespresent.com/uploads/1/3/0/9/130969723/4702206.pdfIn PDF document text
    • http://kunuruku.breedengallery.com/uploads/1/3/2/7/132740829/7213947.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/1/0428/9835/8432/files/92161478626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/munutesupobudilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4791/files/augustus_strong_systematic_theology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/xuvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/battlefront_2_capture_hask_reach_the_platform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/5050698928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/zodinutumivaladi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8323/4470/files/consulting_company_business_plan_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8048/1958/files/netflix_windows_7_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/56713443910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/introduction_to_mastering_physics_answers.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 8

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_off00005cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC9 5220 bytes
SHA-256: 9a04f5aae62c6d13e0f0b6d7dd18f493da0838bc4c3e0747411983b3fa953326
font_01_sfnt_off00006e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E89 10032 bytes
SHA-256: 713944e679584f22c0dc67e0e1c6ada4602a57c85daa8ca7064f65660f370fe5

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