Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f6ed446c4c823f…

MALICIOUS

PDF

51.3 KB Created: 2020-08-21 18:31:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fb1b61a386e2a0eeb49ebc8e504c727 SHA-1: f79125c6e4119305f30079d7b8b989574b07db71 SHA-256: f3f6ed446c4c823f1af79623ffb2c21e2c4cb38d85e5583f6c1413ef097c4f3d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though partially obfuscated, includes a URL that matches the redirector's pattern, suggesting a lure to external malicious sites. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector and a link farm.

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=suddenly+it%2527+s+magic+movie+sub+indo In PDF document text
    • http://files.buildingfaithwithfun.org/uploads/1/3/1/4/131407144/xufedipiwokewe.pdfIn PDF document text
    • http://vuxiropa.maxxseals.com/uploads/1/3/1/4/131453574/kozasenogoma.pdfIn PDF document text
    • http://files.oneontapubliclibrary.org/uploads/1/3/0/7/130739525/defuzokuturenomifu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/85589629240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/suluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/40388425219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/27643395185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/64701413331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3969/4741/files/53020049832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1258/5634/files/bulagubabamejisawotuzal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4629/files/48045167770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4664/files/new_antifungal_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0247/8237/files/managerial_accounting_exam_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4728/1062/files/business_english_cambridge.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 2

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_off00007069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7069 5600 bytes
SHA-256: 220fe4548407fb4ad6627c03191bb5c63acc3db5325b8d181517778858ae7035
font_01_sfnt_off00008364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8364 8660 bytes
SHA-256: a7be6ba3f3070075da38f4a2fbc24616a4f923a643255d56c9eceeb41c8fc78b
font_02_sfnt_off00009b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B88 10720 bytes
SHA-256: 7923b8b37637b8f148ceb1086c8c330d25572a09d6493a06679f22dd2595ada3

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