Malicious PDF — malware analysis report

Static analysis result for SHA-256 d18fe6792d93ed29…

MALICIOUS

PDF

46.8 KB Created: 2020-08-25 03:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bee8b746dbe7c066679bbbee057838c SHA-1: 4bf39f54ac423821c7a491c5884ba22008e70056 SHA-256: d18fe6792d93ed29c5dc5066c0231a2dd85f25e18f368e57641f9de836417799
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=mustache+template+tutorial', suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=mustache+template+tutorial In PDF document text
    • http://files.officialmusicsounds.com/uploads/1/3/0/9/130969206/b6ac2.pdfIn PDF document text
    • http://files.saikmusic.org/uploads/1/3/2/7/132740415/67c8893d65fe7.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/1/0436/3943/9510/files/borebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6889/0782/files/fuditidetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/1179739137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0822/8508/files/69793127254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/acetate_sheets_a1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0041/2835/files/mekanisme_adsorpsi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0907/1513/files/pizoxiziwuzatof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/19836547593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5032/7451/files/sample_of_undertaking_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/2889633889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/hechos_y_actos_juridicos_concepto_y_clasificacion.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_off00006e7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7F 5180 bytes
SHA-256: d69ca84f3815dd40a91c76ecfd961bb721f67c7a35779dbdc75d2015fa4ae18e
font_01_sfnt_off00007ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF4 14560 bytes
SHA-256: 6bc1f9bebb639730f23a83b8b6df46223878452d4e3c7783eae9b4bc11ee4bf1

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