Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f996364e489f95…

MALICIOUS

PDF

51.4 KB Created: 2020-08-31 03:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a65ce3198998915fc82fb3cabd22fcc SHA-1: c3dd607eab12f13ae99fea72b29230064b85678e SHA-256: 71f996364e489f95b03e848ca71e0e0371c304cee33ae8d9c5f0ef90553c358c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation, pointing to a free download lure. The primary malicious URL identified is https://ttraff.com/wix?keyword=unknown+opcode+epsxe, which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=unknown+opcode+epsxe In 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/1/0429/3872/8611/files/25367901681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8970/5625/files/19339849862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/tikav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/gerapatobidusuxopewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/fegiledelelimata.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e0dc_08d7882393c04a60a1c9ff32be56b15b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6ed8935f978a4a2e8e66d38e56bbc9ac.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_29d012bf2c4844658994e1a5db8f2014.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_1ac3c43eabc7466497d2b29eb1063d4c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f3ecbe_64a8ea1f954a4380b7139d422346dae1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d84a30ca314344718c75cd84b6c6660e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_de221f358af14cefb7bdd19a92485e94.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0033ea4452db4d5b989bf92049294be2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_a99d2afba1474d52bd5a49e9bc7741f7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a2d007_1692cd8e70054a788c883a9dca234558.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b47706_e69b35c49b5d419ba3cbcdd1bde2525e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/34e21e_3a08528222844cea949e2881eee63d69.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA9 3184 bytes
SHA-256: 26cd4b7c216739b2855cf77b0882590b680568829e9e0af8426bb36846f61eed
font_01_sfnt_off00008afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 4944 bytes
SHA-256: 4b61bc24d2adef2b77486ef3c814549c485dc7e576c6f7375abd3a00660535dc
font_02_sfnt_off00009bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFE 10540 bytes
SHA-256: abafddb0e76aaf16fcacc7491b583fd15067b7d52df8e76e0c4f554a86eb8368

Open this report in the interactive analyzer, or submit your own file for analysis.