Malicious PDF — malware analysis report

Static analysis result for SHA-256 8680a9d21588327b…

MALICIOUS

PDF

45.8 KB Created: 2020-08-29 02:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88eb21a0d50882e00a723e3989a01d0e SHA-1: e39e895bc345d3caecfb16a1303c5a4c33f763ea SHA-256: 8680a9d21588327bc8934b4ec394efa0f0a1ebdd1b02956e8b90b2fdc248bf8e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to an SEO redirector, suggesting a phishing or scam campaign. The primary redirector URL is identified as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links indicate an attempt to redirect the user to malicious content, likely for credential harvesting 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/wix?keyword=limit+0+0+belirsizli%25C4%259Fi+k%25C3%25B6kl%25C3%25BC+say%25C4%25B1lar 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/b8c837_eeb644a8260646139682e89063430a1d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c9560792eea749edb5500466834619e7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_86bb724a6c4c4758951bdfc7cabb3def.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_89144cee0e56416bb73b154dfc3b7f77.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/que_es_el_control_de_calidad_total.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/98718809396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/shroud_of_turin_photo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/80996420534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/zimof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/70469510434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/toxuratevemog.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_off00005260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5260 5792 bytes
SHA-256: bde6bc72dc6777e168aded4048c4e3972e517722b2a3f75fc6fa7760eab64f9f
font_01_sfnt_off0000659e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 14920 bytes
SHA-256: 8a755fb831db7b974aa956e807b341e6249355dabe22079aaf8c337829a84a08
font_02_sfnt_off000092e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E9 16144 bytes
SHA-256: f7282090e270060608fdc575ded0b184a97243f724fc845514d2e81390c10c7f

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