Malicious PDF — malware analysis report

Static analysis result for SHA-256 63964fc2a397de78…

MALICIOUS

PDF

51.1 KB Created: 2020-08-10 02:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ff29a961f62b5ca66b4261ec3a98f31 SHA-1: 8cb42a50e314cdc89ad075058368921ca50dee7e SHA-256: 63964fc2a397de78e8c74a4985b11e74cc004004eed07db12f7e6c93897722f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. This redirector is used to funnel users to other URLs, including a Shopify-hosted PDF, suggesting a phishing or content-luring scheme. The heuristic firings indicate the PDF is designed to link to malicious redirectors and functions as part of a link farm, likely to improve SEO for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=absorcion+de+carbohidratos+lipidos+y+proteinas+pdf In PDF document text
    • http://files.dragonflypediatricot.com/uploads/1/3/0/9/130969546/tojozibo-xasos-zobelew.pdfIn PDF document text
    • http://files.vpgal.com/uploads/1/3/0/7/130775429/1865793.pdfIn PDF document text
    • http://files.juniorbisonvolleyballclub.com/uploads/1/3/1/4/131407357/parixixebo.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/1/0433/6100/9829/files/86602467761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/dark_souls_2_titanite_shard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/60921275945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3366/3400/files/78960870344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9390/files/nijutajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/7754/6663/files/clinical_chemistry_principles_techniques_and_correlations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/9078/2881/files/assessment_procedures_for_counselors_and_helping_professionals_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/turevewoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4162/6011/files/paxuwelugedumerapexizoged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/2046441736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/91372203841.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_off000086bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86BF 5472 bytes
SHA-256: 540aa5323dd3245b0f1507417050c21cd8e4a2ea09f73fd484e80e4319d377a2
font_01_sfnt_off00009956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9956 11092 bytes
SHA-256: 8fcd1e0b68b92b8e4d162dfd2e6efbbb2a75809396462c056dd974b8e1fac03a

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