Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f962f909885e8f…

MALICIOUS

PDF

45.3 KB Created: 2020-08-15 04:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9553ec2a434a6ba158a378466a38ef6b SHA-1: 0ea831946d3c577bbb6dfc85688856569b07aa8c SHA-256: 99f962f909885e8fe70a4cc063b6be8ae7a42d71a59d3811780e26b9196d79d7
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to ttraff.com. Additionally, another critical heuristic detected a PDF link farm, indicating a large number of embedded external links. The document body contains obfuscated text and multiple URLs, including the primary malicious redirector and several benign-looking Shopify links, suggesting a lure to a malicious site. 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=about+us+page+template+w3schools In PDF document text
    • http://files.baremedispa.com/uploads/1/3/0/7/130775974/japudufoboxewavinek.pdfIn PDF document text
    • http://rozupen.juliahendrickson.com/uploads/1/3/2/6/132681670/936128007a7a7e.pdfIn PDF document text
    • http://fukigos.lasvegasautoglasscompanys.com/uploads/1/3/1/4/131453133/2506832.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/1/0430/2631/7473/files/lonely_island_jack_sparrow_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/17158823239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/turexumolojozatosuwiwobil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/sujexipisojekawezux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/boss_auto_liker_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/ffxiv_dark_knight_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/levugavemezopidofixum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/39359317482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokixud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/benazoju.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_off00007310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 5636 bytes
SHA-256: 2605ba1470151e837e0187ba6485b420fce9c5e707781e0bbaa632db04c7ba8f
font_01_sfnt_off0000862d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862D 10008 bytes
SHA-256: fc89923852f96e9305c3ac070846e5e31ad05652258710b112bba92a373edc29

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