Malicious PDF — malware analysis report

Static analysis result for SHA-256 be20f048b6db79d3…

MALICIOUS

PDF

43.3 KB Created: 2020-09-13 03:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8be2de42b8ccaf71bbd1739cbff33d2f SHA-1: 8b06dd9f72a9e4932ae96bbd6eeab61d3dbc8b76 SHA-256: be20f048b6db79d3a101a5fb9de753f6a71463025ac84a65c51b61965a5479ff
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.link/wix?keyword=dk64+boss+guide'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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.link/wix?keyword=dk64+boss+guide In PDF document text
    • http://files.jodievees.com/uploads/1/3/1/3/131379832/0a26e4.pdfIn PDF document text
    • http://files.theaspieneuroscientist.com/uploads/1/3/1/3/131380641/5905222.pdfIn PDF document text
    • http://files.savemartlascruces.com/uploads/1/3/1/4/131453990/zodovud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5154/7800/files/36647153086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3859/5482/files/8358881892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6213/0853/files/chromatic_scale_guitar_chart.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/035627_4a3af8963b36445282947427cf1f1072.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b30317aaa5564d66978070745cb83036.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/23e9be_4496ca088f5e42feae61ff56293a0e73.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8de238_fa1033a8d3ed49449e2c1bccc6ebc57a.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5388/2280/files/35638508074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5004/files/bharata_rajyangam_articles_in_telugu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD1 4796 bytes
SHA-256: cb3ffcc65578a6cf7831cc75a09acca621c176c101efa7d0fcf699db12c71b5d
font_01_sfnt_off00007029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7029 9996 bytes
SHA-256: 70335d465f01a12410213427cabfda26d1a2300514565453456fc27baaa1902a
font_02_sfnt_off00009262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9262 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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