Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f91b3ffdfa7d15…

MALICIOUS

PDF

43.7 KB Created: 2020-08-12 17:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecabe3f495f2af54c301d59cda4a0fa9 SHA-1: 395b3a0c91f32d94fc9fe60622bb8498348c7510 SHA-256: 35f91b3ffdfa7d15971bf9fbc5a959e79c131c47a409a036041215fc11261c89
194 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, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The primary malicious URL, https://ttraff.cc/pify?keyword=muse+butterflies+and+hurricanes+piano+pdf, is likely used to redirect the user to a malicious site.

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=muse+butterflies+and+hurricanes+piano+pdf In PDF document text
    • http://files.the60four.com/uploads/1/3/2/6/132681464/94fd7bb.pdfIn PDF document text
    • http://files.surrenderedtochrist.org/uploads/1/3/2/6/132681656/wulegi.pdfIn PDF document text
    • http://files.spwrestling.co.nz/uploads/1/3/1/4/131407944/ralekisu.pdfIn PDF document text
    • http://bivunir.montgomery-chamber-music.org/uploads/1/3/2/6/132695375/pumigewu_migevuzedafa_binazupudulefe.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/1/0427/6345/2583/files/analysis_of_algorithms_robert_sedgewick.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6886/6208/files/nusomasejiwaxed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0620/5857/files/current_affairs_2020_19_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8230/9029/files/sumagaxivorulejeterexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/koxojatazirapovagumigij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0624/6557/files/brochure_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/niwaxurarogofavijodowezaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2520/6169/files/dedanelifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/physical_chemistry_formula_for_neet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/7050354721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/66076327248.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_off00006c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 5388 bytes
SHA-256: e76ba9e1ace53755fa1a5b201418ac914e68dd2b1fda1832e4ff34d8a44a0b35
font_01_sfnt_off00007e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E69 10280 bytes
SHA-256: ee5eb9c2ec15898f76f3e51d42837baf67b9cc9ee3d40b5a008ada985263ace0

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