Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fdf65a57cf4e8de…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 04:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a62386c0e0f2fc45cdb366420d5a2b35 SHA-1: 8657a9f492742a55a0886245cb695391ca5a4ed8 SHA-256: 5fdf65a57cf4e8dec233a54cf00ab0809a8625585d1b472e6d53f33540a5188f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. The primary link redirects through ttraff.com, a known malicious redirector, likely to deliver a secondary payload or phish for credentials. The ML classifier strongly indicated maliciousness, and the presence of a malicious redirector confirms the intent to lead the user to a harmful destination.

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.com/pify?keyword=hamlet+appearance+vs+reality+essay+pdf In PDF document text
    • http://files.munchingnumbers.co.uk/uploads/1/3/1/1/131163579/turozulo-kijikuze-benelukixuse-digeze.pdfIn PDF document text
    • http://wonufas.lorraine-lopez.com/uploads/1/3/1/8/131871674/4e7045.pdfIn PDF document text
    • http://files.neotrainehr.com/uploads/1/3/2/8/132815343/kapuwot-tebof.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/1/0433/8925/5847/files/49353074740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/wumirexuvepotilobip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/historia_de_la_bandera_de_panama_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/lobepusadofisarosal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0100/1630/files/roxana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/34104650833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/54322776945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/vigipip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/24001854828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/clinical_trials_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/82424371070.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 1

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_off00006af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF2 5424 bytes
SHA-256: 8e6be649b9115ec7b6ec31f850d0b0b84a1f8f06a45071de7f52a81934b337fd
font_01_sfnt_off00007d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 9956 bytes
SHA-256: 64d086e9293e730fe9610b32aa80210f797a8a9cb8c35ba12167cdbc8e4a9aac

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