Malicious PDF — malware analysis report

Static analysis result for SHA-256 99f1c06a4890ab10…

MALICIOUS

PDF

46.4 KB Created: 2020-08-08 16:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d9bfd89834a63d7495e8606a618e29f SHA-1: e42412083c064001180cf8d914205ded2b598ad7 SHA-256: 99f1c06a4890ab10f6344ef35acb260f373fe4f7d5f78782e0ef0d0f0bf05132
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL 'https://ttraff.cc/pify?keyword=fundamentos+de+bacteriologia+y+micologia+veterinaria+carter+pdf' is a clear indicator of a phishing or scam attempt. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF links, reinforcing the link farm tactic.

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=fundamentos+de+bacteriologia+y+micologia+veterinaria+carter+pdf In PDF document text
    • http://files.softcast-technology.com/uploads/1/3/0/8/130813777/tigovabuwoke_mibifusetirev.pdfIn PDF document text
    • http://files.michisboutique.com/uploads/1/3/1/4/131483002/6587822.pdfIn PDF document text
    • http://files.ottertotsplayandlearn.com/uploads/1/3/1/4/131453588/59b3e0.pdfIn PDF document text
    • http://boxaveg.kbbutiken.com/uploads/1/3/0/7/130775129/manogo-jomojunaxigu-mirunoj.pdfIn PDF document text
    • http://files.swatimetals.com/uploads/1/3/0/7/130775952/femixonos_minufig_magajefog.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/1/0428/4986/1791/files/pokemon_ruby_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/46798693862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5023/6064/files/welekekudonamek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/numuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/jawexagizofuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2843/8440/files/liruvaxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/42850414129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/waxukifusiroritiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/7_dwarfs_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/57878357800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/baby_essentials_checklist.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712F 5732 bytes
SHA-256: 8792b3a7946a5bcce9e253191d32240a3f4a88cc13cc22c692957d76b78c6d70
font_01_sfnt_off000084ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AD 11988 bytes
SHA-256: 28fa0d36ba763563a6488f01e92f9c2c3adde86c8043799589eec49cce0a2882

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