Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea7f1d44b3819bc…

MALICIOUS

PDF

50.7 KB Created: 2020-08-12 16:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4df394a9c12f90469f9d252e14e749d6 SHA-1: 5008637673a752133c4a21017863b631fe65f945 SHA-256: 4ea7f1d44b3819bc19e47142acf39eea6fbba68cf1ec1677ad47739b8d34ed15
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that appears to be a lure for 'classification of anticancer drugs pdf'. This URL redirects to the malicious 'ttraff.com' domain. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to disguise the malicious redirect.

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=classification+of+anticancer+drugs+pdf In PDF document text
    • http://files.crossroadsconsultinginc.com/uploads/1/3/2/6/132682806/c55e280fce.pdfIn PDF document text
    • http://sazamofu.natureandyou.org/uploads/1/3/0/7/130739826/8755413.pdfIn PDF document text
    • http://files.modomiophilly.com/uploads/1/3/1/4/131406173/6141423.pdfIn PDF document text
    • http://files.historyobscura.com/uploads/1/3/0/7/130776861/xupaxerapakoz.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/1/0435/6256/5795/files/drawing_abbreviations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0772/0093/files/sidamam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/openssl_certification_authority.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/19326983167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/losegam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4752/9117/files/cariotipo_47_xyy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/29332986954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/58384471779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9233/7059/files/14398098969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9944/5664/files/nakama_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2801/3471/files/98122122303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/the_alchemist_summary_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9219/5993/files/20904421973.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_off000083cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CD 5228 bytes
SHA-256: 23962d1490eff58cce41128abf25a8d6ca1e2aab20796d10871a49d3614b143e
font_01_sfnt_off0000959f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959F 12288 bytes
SHA-256: 34d60ae6d9b981e1120407323027b39c6dabc268243a95619b44d49bf481ca73

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