Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fc8ee0d9b09742…

MALICIOUS

PDF

46.0 KB Created: 2020-08-18 17:57:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eecf2c107997d3882edc076ca3c26d3a SHA-1: 34243d0a15a3bacb11cd9cead6196036f7f8df1f SHA-256: d4fc8ee0d9b09742ceeae6048c82654098e23b58fc8485e302d0481df5e0dda6
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'tri fold brochure designs free' and a URL pointing to a redirector. This suggests the document is a lure to a malicious site, likely for phishing or malware distribution.

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.cc/pify?keyword=tri+fold+brochure+designs+free In PDF document text
    • http://files.gulfbreezeschoolofmusic.com/uploads/1/3/1/4/131406537/suxasasikuxe.pdfIn PDF document text
    • http://jenuki.danalockhart.com/uploads/1/3/1/4/131438379/9579537.pdfIn PDF document text
    • http://winapox.jennypiersol.com/uploads/1/3/1/6/131637254/9672545.pdfIn PDF document text
    • http://files.rosemaryrichings.com/uploads/1/3/1/3/131380029/6558947.pdfIn PDF document text
    • http://files.thomasstonewrestlingclub.org/uploads/1/3/2/6/132682051/3605317.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/1/0429/2670/2758/files/29573616551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/14327397951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1397/1861/files/woboxatojunagubelisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2529/0648/files/renitov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0632/7959/files/acceleration_practice_problems_short_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/video_script_template_google_docs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/51845425006.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_off0000777a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777A 5160 bytes
SHA-256: 1ec23bc79e5f76c3beb5717c07f819670590b98d4d38a975cfed6c12081ef9c5
font_01_sfnt_off000088ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88FF 9948 bytes
SHA-256: cbd65b8799b6e737fcf772f8aec8b77b354b4c3a1a0c5abf3cf570301ba04a94

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