Malicious PDF — malware analysis report

Static analysis result for SHA-256 968838a6de78d28e…

MALICIOUS

PDF

71.8 KB Created: 2020-08-09 20:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0a65a12d3d3f9a1058e4d8309e037ba SHA-1: 43485566414d3ddab0010743c1df103eb1755cbc SHA-256: 968838a6de78d28e8594765b554284616eca6609e4d16458e40f7424143f52da
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to create a link farm, likely for SEO manipulation or to redirect users to malicious content. The primary redirector URL, 'https://ttraff.com/pify?keyword=digestion+y+absorcion+de+los+carbohidratos+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains this same URL, suggesting it's the intended destination for users who click on links within the document, likely as part of a phishing or scam campaign.

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/pify?keyword=digestion+y+absorcion+de+los+carbohidratos+pdf In PDF document text
    • http://files.thesciencezone.org/uploads/1/3/1/4/131413718/muxiveli_visozenupedag_webetiwu.pdfIn PDF document text
    • http://files.soundescapemusictherapy.com.au/uploads/1/3/0/7/130739309/galatu-monirukejowus.pdfIn PDF document text
    • http://kagalib.ohiodentallaboratory.com/uploads/1/3/1/6/131637136/4941754.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/1/0433/0687/7080/files/gopag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/33661553479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5045/7505/files/cbr_test_procedure_for_soil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7396/1126/files/32291054938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/john_deere_7000_planter_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/38106887705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5760/0920/files/lameruzaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/vasajajomedosijal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66456909559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/pepufiwusuvitibiwonujek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/linevoxuwekizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/nafureluronejuxokijovurur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/opencl_error_codes.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 4

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_off0000d87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87D 5660 bytes
SHA-256: 3b129d985d2a69fd5f074cd67cf2620b4d215917abf6987cefa8f9b9b28a4ff1
font_01_sfnt_off0000ebbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBD 11016 bytes
SHA-256: 1cb568590734ccf632bbcd042b2ca0316b05bdbbeac036bcb6de5df529725fc8

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