Malicious PDF — malware analysis report

Static analysis result for SHA-256 e791abd4817147c6…

MALICIOUS

PDF

43.0 KB Created: 2020-08-08 06:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25f025e45954834a6514751ddc47fbc5 SHA-1: 111cd3f513b844adc292809b7730fd555ee4c6d9 SHA-256: e791abd4817147c6f5e6c4ed4665d98195919a996956b1d51f3f53899404fc37
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to benign Shopify URLs, but one critical link to `ttraff.com` is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a free PDF tool and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

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=programa+para+unir+pdf+gratis+en+espa%25C3%25B1ol In PDF document text
    • http://files.baguiotransienthouses.com/uploads/1/3/0/9/130969576/1275019.pdfIn PDF document text
    • http://files.pycap.ca/uploads/1/3/1/8/131857152/pamodetu.pdfIn PDF document text
    • http://files.jerusalempoemscroll.com/uploads/1/3/1/6/131607029/6620094.pdfIn PDF document text
    • http://kakux.donahueindustries.com/uploads/1/3/1/3/131379803/8557330.pdfIn PDF document text
    • http://files.buzzardroostfarms.com/uploads/1/3/2/6/132680986/4261999e9aaf654.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/1/0435/2173/6859/files/demetezogavurexunusete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/52873328742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/51759759354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88490435411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/9671518489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/90873694162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4167/7731/files/nopetar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/ridunumofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/medicinal_plants_in_vietnam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/gisikusado.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 5

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_off00006448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6448 5576 bytes
SHA-256: 1c3811a306692f112a073334227bb42eeff3399e69925de55c29672e2502824f
font_01_sfnt_off000076e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 11472 bytes
SHA-256: c875f61f5b4be9b76fdffb05d84027b812e1922dca6a48a60c5ee695ccb1b40b

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