Malicious PDF — malware analysis report

Static analysis result for SHA-256 18757a7705d5603e…

MALICIOUS

PDF

39.4 KB Created: 2020-08-16 21:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc3a61a8a68011b2f7d762d4e11e8722 SHA-1: ec7fc1ef432fd4d454389f9a1ead13041f6c4e16 SHA-256: 18757a7705d5603e3cae977016dbc5727944cb63520dd05a59a1ed76799eea16
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a primary redirector link to 'ttraff.com' that is flagged as malicious. Heuristics indicate a remote support tool lure and a password-protected archive lure, suggesting the document is designed to trick users into downloading and potentially executing further malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/pify?keyword=teamviewer+8+old+version In PDF document text
    • http://files.medaryville.net/uploads/1/3/2/6/132681783/mumazopokuzoz.pdfIn PDF document text
    • http://files.brandonrdavis.com/uploads/1/3/1/3/131398533/rukenamereluma-xejubivonuri-resagog.pdfIn PDF document text
    • http://files.columbiapresbyterianchurch.com/uploads/1/3/2/6/132680784/b31eff04d2f574.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/1/0432/3531/1784/files/37494654230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/wuwasonopazavup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/newivobiwizuzomaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2154/8194/files/cissp_domain_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/54144269249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/insertion_sort_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/17472689518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3292/6615/files/consonant_phonemes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/51592668030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/fetch_post_form_data.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_off00005bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBA 5264 bytes
SHA-256: 70ff71145c30ce26eb16aff379ede69a14ad0c397e41c5b7ef3cea39e400c50f
font_01_sfnt_off00006d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D99 10668 bytes
SHA-256: 6ea2612e53c915596c4489fab47df5ae7c8ed34ee627873fe30f120d8cad43df

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