Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab963751bc8d4b5a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 12:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65dd0c3f60a237364bd1a10a1b487e56 SHA-1: a7159f632b0d69247336b89fd164f8c5bfc9391b SHA-256: ab963751bc8d4b5aea89900d8ddc118d36e60011ba2f41c6b59255b57b0bf918
202 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=intermediate+grammar+games+pdf+vk', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous links to external PDFs indicates a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=intermediate+grammar+games+pdf+vk In PDF document text
    • http://files.volcano-blog.com/uploads/1/3/0/8/130874125/tumepelatixa.pdfIn PDF document text
    • http://files.enhanceplacementstories.com/uploads/1/3/0/8/130814575/5361933.pdfIn PDF document text
    • http://files.azlife.church/uploads/1/3/0/8/130874124/mesamil_kegekar.pdfIn PDF document text
    • http://files.maryhagenauthorromance.com/uploads/1/3/0/7/130740097/941d132e556.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/1/0437/6713/6413/files/71097223795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/degetaguzatamapisoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4512/1182/files/expressions_equations_and_inequalities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/56645971873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/75365228208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/67829120958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6473/7448/files/9093267553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2015/5042/files/tuning_pid_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/user_acceptance_testing_tutorial.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
🗂 Part of campaign: cresaptowneagles2883.com 4 samples

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_off000074bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BF 5392 bytes
SHA-256: 9c75ab97ebada715abfea87a02183f29c5c0d7cd7bf315815be32a630a32310d
font_01_sfnt_off0000870c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x870C 10180 bytes
SHA-256: 8e09b5e484da1984728e3de1798d400743cedea505b7bfdfabf7812c7f2770c7

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