Malicious PDF — malware analysis report

Static analysis result for SHA-256 f59140da69dc715c…

MALICIOUS

PDF

57.0 KB Created: 2020-08-29 17:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f518044dc2acac5bf90ecd06406660f SHA-1: f138e84ded8ef9375f875fcab7140c925ff2eefc SHA-256: f59140da69dc715c19d544877746438ac04a67fa900db92868a371a524bfb164
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though partially corrupted, contains text related to 'Clash of Clans trophy base th7' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious IOC is the redirector URL.

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.com/wix?keyword=clash+of+clans+trophy+base+th7 In 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/1/0435/6512/1699/files/numpy_normalize_columns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/complex_sentence_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/nejukapona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/79894326044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1767/files/mechanical_engineering_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/1788/9960/files/difference_between_bookkeeping_and_accounting.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1a36d9949354433ca8684a5763695c9d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_24f40ae37c9043b6b7bc1a45d3cb2a28.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9ab8d2e2da394f6191214d53b1402e32.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f460c9235b2246f995834e964e809b1e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_681f2cc7fc5c4ddc8bff164975e67588.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7319 5188 bytes
SHA-256: b96995c622d51eedd2d3b5572b971d037caebccba2b7cd824fe82931b1380cfd
font_01_sfnt_off000084b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B6 2492 bytes
SHA-256: cb3aa92f4f715c81176c8173220b55f287c178aa4535fc4369ae2ac7a95f694b
font_02_sfnt_off00008f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F76 10412 bytes
SHA-256: 59c474742a83895f2b0716325a46e678194fe4e0b45eca7cc142245818d84c17
font_03_sfnt_off0000b34c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB34C 16232 bytes
SHA-256: e1fcaa290bc8b5aed85f312864440120c61db6abd2add9737883d56687aaee62
font_04_sfnt_off0000c869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC869 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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