Malicious PDF — malware analysis report

Static analysis result for SHA-256 966a535a81c752d3…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 15:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96b5d35f4dd4e64bb0636c29254a86aa SHA-1: bd6984c5266cff8731ec16537e4a44045fb545b1 SHA-256: 966a535a81c752d3a0689d8e21c70cf987045a48c830488dc36fc3727d20fc8b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One of the primary links, 'https://ttraff.cc/pify?keyword=algebra+2+worksheets+slader', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, indicating the intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=algebra+2+worksheets+slader In PDF document text
    • http://sugexez.openthedoorleadership.com/uploads/1/3/1/4/131453558/dadixexoxovore_zezax_zigitetob.pdfIn PDF document text
    • http://files.zetakappakappa.org/uploads/1/3/0/8/130874510/wexexasagumagit-magobelalasufa.pdfIn PDF document text
    • http://files.vernbalicontractors.com/uploads/1/3/0/7/130740141/546a921741e454.pdfIn PDF document text
    • http://sesudunuw.nicolaseconomou.net/uploads/1/3/0/7/130776885/869595.pdfIn PDF document text
    • http://files.galleryatno6.co.uk/uploads/1/3/1/4/131406885/vorafebaku.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/1/0430/3316/5986/files/94349461113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9317/1103/files/agenda_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/34703361214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/68653321298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1832/2839/files/bombay_movie_songs_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/vaxitasubijokiralub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/83984647075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/ignou_admit_card_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/busazazotitukegukuwiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/how_to_make_discord_louder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/apc_back-_ups_pro_650_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5087/files/luwisagujiw.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_off0000577e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577E 5504 bytes
SHA-256: fd89d3eb2df0f5d411e01792b9e5d5719bbebcdaf064e55e0c6c2545b6427178
font_01_sfnt_off00006a3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3A 10288 bytes
SHA-256: 9fc2098d09139eede1c9454ca569710ae32d746e739161ad3425db2a5d3563d8

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