Malicious PDF — malware analysis report

Static analysis result for SHA-256 f898eb5d4445a831…

MALICIOUS

PDF

40.9 KB Created: 2020-08-16 18:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25fb7a7872ac38a243bfc2500d1eddc7 SHA-1: 6f942376502f8c9cd4370650ffef746fb91c4e17 SHA-256: f898eb5d4445a83174166c6fe6937364137ff4212069e547de48e527495c1844
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 pointing to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic indicates a direct link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious verdict. No scripts were extracted from this sample.

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=kendo+scheduler+editor+template In PDF document text
    • http://pukefoge.duffeyphotography.com/uploads/1/3/1/4/131438539/notonipulosodug.pdfIn PDF document text
    • http://files.fromposhtoohmygosh.com/uploads/1/3/2/7/132712093/tonezepap-xikapewowoz-kiroje.pdfIn PDF document text
    • http://files.allstarsandbestsellers.info/uploads/1/3/1/1/131164350/fuvukupilirowad-vevatokage-wamikaxalovi-mepajufuwulojov.pdfIn PDF document text
    • http://files.yogawithlori.org/uploads/1/3/0/8/130814596/d6fbf49.pdfIn PDF document text
    • http://files.vocesintimaeartsong.org/uploads/1/3/2/6/132680853/tagibivujifak.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/1/0430/5698/8317/files/48142024350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9367/8497/files/75161041277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7938/4736/files/rapajisikomajefefejabom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/95298300261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/bsc_statistics_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2083/7279/files/cavitation_and_bubble_dynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/2002_e55_amg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/activity_diagram_for_online_shopping_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fatexuxutul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/26929137159.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 7

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_off0000571f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571F 5280 bytes
SHA-256: 9a7758c172fcb44da7793239c6c76a42d9cade54b82aa9519c4fcf4c2b75dabc
font_01_sfnt_off000068e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 13752 bytes
SHA-256: b9f3ffba4e6340b47a1f23cb67592d769c81078c1e204b16e7785e2520d70b20

Open this report in the interactive analyzer, or submit your own file for analysis.