Malicious PDF — malware analysis report

Static analysis result for SHA-256 4136c5854321cf94…

MALICIOUS

PDF

44.1 KB Created: 2020-08-04 16:41:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c7a46f607aa565bfd2cf0f0f069fe51 SHA-1: ddbef969165b8890f1d46857e5a1df22c56a3d76 SHA-256: 4136c5854321cf94d90913d84580e9b447b438a27cc8eedd48a3223a6609cfe5
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=novos+anticoagulantes+pdf', suggesting a lure to a malicious site. The presence of numerous Shopify-hosted PDF links indicates a potential link farm for SEO manipulation or distributing 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.ru/pify?keyword=novos+anticoagulantes+pdf In PDF document text
    • http://demuvi.tccnetwork.org/uploads/1/3/1/6/131637224/7c68d69f2.pdfIn PDF document text
    • http://files.iwai-izmir.com/uploads/1/3/0/7/130776809/buvixexonebabop-botewejoto.pdfIn PDF document text
    • http://files.raleighroofing.org/uploads/1/3/0/7/130775970/1213792.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/1/0437/4475/5866/files/54509229605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/99489282466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/3756275583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/79720154677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/54948233998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/vugojani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/vupunevewumikekabetijas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0792/4635/files/64223489551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/pakozam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/aleph_borges_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5834/8703/files/puvowoxuwukajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/tesimilanimowijowofekave.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_off00006d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1D 5256 bytes
SHA-256: b073d4a81e00a144f23d4878ab898248e4c9f49bddbaba417102c7d3e6c2e8a5
font_01_sfnt_off00007f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F27 10680 bytes
SHA-256: a8bc65d686381394f1bc4494f8d01739079216ace5ac63b1cc9d8c33566398fb

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