Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af94c7f7d379583…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 00:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b8b8ea4e946f512205f2d1fc653f983 SHA-1: 0da75d16569940e69a829c6913cc78db3bb28bb8 SHA-256: 7af94c7f7d379583ec383d505e29ee6d5f247b8d1a6a7c4701ca9e61fc044655
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL "https://ttraff.cc/pify?keyword=3d+live+animated+wallpaper", suggesting a lure for free downloads. The presence of a large number of PDF links indicates a link farm, likely for SEO manipulation or to distribute malicious content. 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=3d+live+animated+wallpaper In PDF document text
    • http://files.thesparklingfox.com/uploads/1/3/2/6/132680813/1d843c235a0.pdfIn PDF document text
    • http://files.inveruriebowlingclub.com/uploads/1/3/1/4/131453402/sakal.pdfIn PDF document text
    • http://ruguvan.k2physiotherapy.ca/uploads/1/3/1/4/131437363/fedifo.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/1/0430/7078/3645/files/83043595753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/pitijerudijefozojonaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/48347632981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/85486843086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2679/1072/files/best_reader_for_reading_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/41222781145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3240/7198/files/gunnebo_speedstile_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/kufiwaxigopipusubopove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0210/files/inspired_beginners_spanish_podcast_10_este_mes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/learning_easylanguage_strategies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/cemal_sreya_sevda_sozleri.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 4

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_off00006a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9F 5148 bytes
SHA-256: 529ad4e9a9186390f0693c6dd144ee485ebc84d2a4c03ba316117d4e2148030f
font_01_sfnt_off00007c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1C 10232 bytes
SHA-256: 4fc2ea24a52e9d882c36d429d76e77906b204a5147f696e3daea165daee388b7

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