Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa26fa91aff6bd5…

MALICIOUS

PDF

41.5 KB Created: 2020-08-10 22:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9936b61297011f8223a999357fd28195 SHA-1: 18f3c5befcbd1f7fbba27583b52d0be8d9c42e56 SHA-256: 5fa26fa91aff6bd556cecd697fd2abb0c4bdddaab77b6eaa0b0a17dd05fe720b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=hq+caverna+do+drag%25C3%25A3o+final+pdf+download, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains similar URLs, suggesting an attempt to trick users into clicking malicious links, 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=hq+caverna+do+drag%25C3%25A3o+final+pdf+download In PDF document text
    • http://files.strongagriculturalsociety.com/uploads/1/3/1/1/131163533/bunojazananij-salit.pdfIn PDF document text
    • http://daziwitu.crime-fighters.com/uploads/1/3/0/8/130813528/gifozibulubibumepofe.pdfIn PDF document text
    • http://files.farmsteadsmith.com/uploads/1/3/0/8/130813645/3809378.pdfIn PDF document text
    • http://kitov.wigandcandle.com/uploads/1/3/2/7/132740405/6052902.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/1/0431/1682/2692/files/24235850621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/95298300261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/leave_of_absence_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/guxukazesuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8454/files/46791160344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8479/2479/files/xasorukofujum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2111/files/toponimovuleguzowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/gawepafikobenadifimabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/18338490065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/the_duff_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CC6 5704 bytes
SHA-256: e50f3291aec50128a35bcc4f76a9328c53b762b05464177aa0583280fe2b1dd0
font_01_sfnt_off00005faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 9776 bytes
SHA-256: a1efb67eed7a99f0e80c257f6b7d1c9ad7a5d5bc3919f84973624581226f1d5c
font_02_sfnt_off000080d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D8 16320 bytes
SHA-256: 04b30c2f2a8018c7583bcbc57b73eccbfb80cfa1e5a2d096ee4f0652c1212bf0