Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b24965a3326844…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 12:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 889871b39264921d78e601183d9db313 SHA-1: af149d0bb73c6f07e121227c91424b00f7b221cc SHA-256: 86b24965a3326844248f538158be64cdd4fa0cf15cb9ed8c6bee8bd6e9afcd74
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation, likely to phish users. The primary redirector URL, 'https://ttraff.ru/pify?keyword=cdr+file+conversion+to+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify links, suggesting a lure to download or convert a file, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cdr+file+conversion+to+pdf In PDF document text
    • http://files.couplematters.org/uploads/1/3/0/7/130738719/bapudexi.pdfIn PDF document text
    • http://files.sergeseiden.com/uploads/1/3/2/6/132681378/3205763.pdfIn PDF document text
    • http://files.tigerphysics.org/uploads/1/3/1/4/131437680/995578.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/1/0433/0687/7080/files/pezudatilekubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/50781573461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/tezatozimegesubibibiwuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/arnold_encyclopedia_of_modern_bodybuilding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/xiwavaterozip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4115/1386/files/tax_rates_for_ay_2020_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4457/5131/files/jokikolekatezewik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3433/7695/files/puwaxasuwezupuvedemudobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/carcinoma_escamoso_esofago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/wojenuxijonoriloxulape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5003/2549/files/1886454071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/xijadofewezegazos.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 7

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_off00005efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFD 4904 bytes
SHA-256: 8d5996c262576a6fad6fc07ad7f34bd166d1caf7cb2514b426c67e5935baa538
font_01_sfnt_off00006fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC2 13044 bytes
SHA-256: e719e00653457f2e8ba0261d96f37ad00dd81215af4c5b61d537ef7471a7f05a

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