Malicious PDF — malware analysis report

Static analysis result for SHA-256 4272a916223f0ab6…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 13:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4648d6f187b65d1d74df8bcec9272782 SHA-1: 85199eded56454969a681a27794e8958fad6ceb1 SHA-256: 4272a916223f0ab696d681e0f0fb1e5d5108f5e0c9bab82fa0f89605b44fce40
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used for SEO poisoning or to distribute malicious content. One of the embedded URLs, https://ttraff.cc/pify?keyword=rammstein+alter+mann, is identified as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document. The presence of numerous links, including the malicious redirector, strongly indicates an attempt to direct users to harmful websites.

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=rammstein+alter+mann In PDF document text
    • http://files.walterslawpc.com/uploads/1/3/2/3/132303081/8124947.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/1/0428/8466/1407/files/2949765330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/ecommerce_website_templates_free_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/sony_ericcson_w_580i.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/aircraft_parts_and_their_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5049/9222/files/51987374403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/mewatit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/27824911891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1558/files/statutory_warranty_deed_form_washington_state.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/rusabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3066/5637/files/43772014522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6598/2632/files/rirofovawubarumeruvukanur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8393/0527/files/and_so_but_because_worksheets.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_off00005d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D01 4836 bytes
SHA-256: 7b7ed8df2926e176bd6e1d30fd0324792a0e3a49bfa9b43602e44bd219462520
font_01_sfnt_off00006d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D57 13256 bytes
SHA-256: 682885c171cca661a437eedf137537d1a2d73cdabf688e47afb283239e4f216c

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