Malicious PDF — malware analysis report

Static analysis result for SHA-256 8400404ba14b62ea…

MALICIOUS

PDF

76.2 KB Created: 2020-07-26 17:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd519d4ffc46cf5b1ea81dafeb717b1b SHA-1: a0f93d3c091a2f033e58ad2454adb2fa69ffc9b6 SHA-256: 8400404ba14b62ea2774a9d803a6f4a3d21afa96853696a76ae262336c113491
194 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to redirector infrastructure, specifically 'ttraff.com', which is flagged as malicious. It also hosts a large number of external PDF links, suggesting a link farm designed to attract traffic. The ML classifier strongly indicates maliciousness, and the embedded URLs are consistent with phishing or malware distribution lures.

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/pify?keyword=atlantica+online+mobile In PDF document text
    • http://files.just-verandas.com/uploads/1/3/1/3/131379045/xobuxisedujus_wekabod.pdfIn PDF document text
    • http://files.navajoareacoa.com/uploads/1/3/2/6/132695492/3917370.pdfIn PDF document text
    • http://files.rpmbusinesssolutions.com/uploads/1/3/1/4/131454521/6088477.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/1/0435/1436/4059/files/34423605666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/83541334075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/lajemenivimisufijufezom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/29392428474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5371/7406/files/muvetigitifawarafijiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gatafuruzakelimosileraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8290/6789/files/2586113524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/96395396714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/15727756349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/sugopisatipopuporebis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/jesetexigilaniditurilaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 4588 bytes
SHA-256: 9826c6c3830281e5ae179459e48908ad94a7cd6a16ea40173de5ccd21f24dcc5
font_01_sfnt_off0000ec0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0A 10104 bytes
SHA-256: ce1baaa1dfba9a934fc52e2c84e4c80ff27fb4117c525abd72340b721462e96e
font_02_sfnt_off00010ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED3 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c

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