Malicious PDF — malware analysis report

Static analysis result for SHA-256 175a33a14eea8f87…

MALICIOUS

PDF

51.7 KB Created: 2020-08-16 15:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 723a19bf45313463b23db2e087b0ef5f SHA-1: 5bdf1d4084ab12082b2f6c3965b33740fd9121a3 SHA-256: 175a33a14eea8f87663e5ad6d7d83fae78c8cba3d8ce61f6d34c5edd6833ffa4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicated maliciousness. The document body and link farm structure suggest an attempt to distribute malware or conduct phishing by luring users to click on these links.

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=arifureta+light+novel+english In PDF document text
    • http://zeferi.driver-guider.co.uk/uploads/1/3/1/4/131452839/terenaxusizixejo.pdfIn PDF document text
    • http://files.guardianfineart.com/uploads/1/3/1/6/131606198/9fc88d3fb6.pdfIn PDF document text
    • http://files.cookschoicehoney.com/uploads/1/3/1/4/131438188/kodizaka-sererub-rinirazozavajo-judivonodaze.pdfIn PDF document text
    • http://files.kypdx.org/uploads/1/3/0/7/130739895/05151fe7c.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/1/0429/5501/4297/files/60736405495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5081/8981/files/75023155519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/84862309867.pdfIn PDF document text
    • http://jipen.selmis-llc.square.site/uploads/1/3/2/7/132740285/gorurudekavawikojawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/laxebagixepasizowogub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/busch_gardens_tampa_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/nursery_rhymes_kid_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/vumur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1126/files/42971976692.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D1 6372 bytes
SHA-256: 20eb2cbe9fea0ceb88fe331353531d3cd4049af188afdba6dd94ae2c11347f6b
font_01_sfnt_off00008bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB8 5080 bytes
SHA-256: c63f78448559238aa908e869dc6c0ad3e3e5e218edb0bf3915618c613636b4d4
font_02_sfnt_off00009d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D01 10304 bytes
SHA-256: 3032c8448a6de4e56c674ccd7536cad9da7cc1f56996652b8ec897cba72b0cfb

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