Malicious PDF — malware analysis report

Static analysis result for SHA-256 feead322f24a9c9c…

MALICIOUS

PDF

43.4 KB Created: 2020-09-02 15:39:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d5992ec4bc2c7d78c5d662a968acc34 SHA-1: 37b6649af4be45536394c5a29a2f8d01603e975c SHA-256: feead322f24a9c9c779acaad3beafce43418f8b0ee1f3da80e7870180d1b92af
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to benign-looking PDFs hosted on Shopify and static.usrfiles.com. However, one critical heuristic firing indicates a direct link to a known malicious redirector at https://ttraff.club/wix?keyword=lagu+bintang+di+surga+cover+akustik. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware delivery.

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.club/wix?keyword=lagu+bintang+di+surga+cover+akustik In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/1e32c2_dd74c1bf4a49496f938eef8cc4e1e7b6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3010b412e38b43359fd62b332d980e0e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0a6bda7af1f449e880e4ca11bba2ed33.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/hc201_humidity_sensor_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajafaliwufenosikem.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/43d598_6444ead61300417e974f3441eff027e1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_88492bafbfee4ccebaf47e4fe01bd625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5899/files/jrue_holiday_injury_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/46727842453.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55DB 5280 bytes
SHA-256: c42e7610623393037265e48a938950d77b7e63cb59bae616619c661585374003
font_01_sfnt_off000067e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 10404 bytes
SHA-256: 27d605148dd472c9fcdbef7332059faadc2f8764675a93e18a24c4aa2e72c840
font_02_sfnt_off00008b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 16204 bytes
SHA-256: a109d5cc1a8599929bd7702a943337bd153faf2776ff4e30ac39a15e38c17cef

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