Malicious PDF — malware analysis report

Static analysis result for SHA-256 fceef671693aa2e9…

MALICIOUS

PDF

43.9 KB Created: 2020-08-05 02:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9af7391c9645412c7f9f2f682e52789 SHA-1: 39857eee1c4977ec9ed01edf1ee48be1420feaac SHA-256: fceef671693aa2e9727bd97bc4504d60776826581e8146700fd551f6e0dcf1c1
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which are designed to mimic SEO-friendly content, leading to a link farm. One of the primary links directs to a known malicious redirector at 'ttraff.ru', indicating a phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=racquetball+rules+pdf In PDF document text
    • http://files.gigstoolkit.com/uploads/1/3/0/7/130775123/31bb302fb3d61e.pdfIn PDF document text
    • http://delet.tracyleighpottery.com/uploads/1/3/2/6/132681947/pazadowumuteg.pdfIn PDF document text
    • http://files.tampagoldendoodle.com/uploads/1/3/1/4/131407406/vuxabi.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/1/0432/4537/1549/files/circumference_of_a_circle_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2947/9076/files/pure_edge_viewr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/basic_networking_concepts_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/raputupebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2100/7005/files/regulaciones_aduana_cuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/java_vs_equals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/84075111017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/binojomilugaxagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/bemer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/word_association_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/28157437797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/4694716618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/xepewoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/34542383097.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 5424 bytes
SHA-256: ad9f48cb3a6342584d8445e14322b9f8f0e4b3fd633e989e88683d24a34eeefb
font_01_sfnt_off0000809b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 9880 bytes
SHA-256: f50c4689b1d6508f2e0e4739b22d37f64ffd70f2ec082a59c00b216206773f64

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