Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8487b212cd522fe…

MALICIOUS

PDF

53.4 KB Created: 2020-08-02 17:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d3f9568329adb33c7a01bb20bfc14f6 SHA-1: 1c4a34fcdf3e293a1d28436105f3dd6466231ed0 SHA-256: e8487b212cd522feb37baa55149a9aa1271fb9c0a76b0f09b009588dd523709c
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, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.cc/pify?keyword=php+rekey+array', is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, potentially for phishing or malware distribution.

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=php+rekey+array In PDF document text
    • http://files.varanasiastro.com/uploads/1/3/1/8/131856772/kulotonevowapoz_sufodikemoxak.pdfIn PDF document text
    • http://files.pda4training.com/uploads/1/3/0/8/130874339/novurozivotubowebo.pdfIn PDF document text
    • http://files.worcesterdoula.com/uploads/1/3/2/6/132695258/mesemojuvo_tadoxawunuxifeg_xasogumuvi_wiboja.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/1/0431/6296/0023/files/73354582053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/47628786933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/77372511053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5076/1377/files/kidemam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/kijirurolodepim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/17529439611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/bixepiguzoduporivazefobeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/93350417226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/zorebeposewiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/regipep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/wodaresufowewiremut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5708/files/lekan.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_off000087f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F7 4864 bytes
SHA-256: 2f5e029bbbdde31e40cf06c3841fa69c6f50652dfdbc2f4f357d9f95ce062b26
font_01_sfnt_off00009887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9887 15452 bytes
SHA-256: ec1d00703c7149bda96d2e5771c3740bfc17810cd169294397c00f2b42f2b2d1

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