Malicious PDF — malware analysis report

Static analysis result for SHA-256 da63dac9a6e7b6ce…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 18:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8b81c53f13e012155ccdaef0df2c919 SHA-1: 068f2dc5cf89f35d83fd484bc386c6d9cada9e7c SHA-256: da63dac9a6e7b6ce96de232ee8cfb5ea5a49264eca2d18a6e0ef33c24dc0aeef
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The ML classifier also strongly indicated maliciousness. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=creative+thinking+pdf', suggesting a lure to a malicious site.

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=creative+thinking+pdf In PDF document text
    • http://files.arilaurakreith.com/uploads/1/3/0/9/130968943/8560670.pdfIn PDF document text
    • http://files.portageresourceguide.com/uploads/1/3/1/6/131606644/8719065.pdfIn PDF document text
    • http://files.annettemontgomery.org/uploads/1/3/1/3/131384468/923421.pdfIn PDF document text
    • http://files.caroldmarsh.com/uploads/1/3/1/4/131482886/kibojezur_widavodukexo_vazulaxo.pdfIn PDF document text
    • http://files.oaa90.com/uploads/1/3/0/7/130775498/fa37e5f2d.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/1/0432/1263/6322/files/how_to_install_ubuntu_on_dell_latitude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4153/4631/files/infinity_to_the_power_of_infinity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8009/7687/files/91063730657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/fowopijesirukoridi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/platelet_aggregation_assay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/femugaboruze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/40537262571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/53469219962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1125/files/aberrant_mind_sorcerer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/ford_3600_tractor_manual_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6971/0242/files/50099603247.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 8

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_off00006dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD8 5124 bytes
SHA-256: 7b66315100fa374d908631c684c4dbe21713fb6137aa19e6894999eb038f6368
font_01_sfnt_off00007f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4C 10432 bytes
SHA-256: a435b75cd27401fb0a6db210198b0c0dfa0031cf514179618dff0dc3e54fbd60

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