Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad9cd3e1b83107d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 07:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23249119c8e927afdf4c5ddfd9c60f1d SHA-1: a84f30c1f31853d93abf68710d49010c0654adbe SHA-256: 3ad9cd3e1b83107d1f9e4efa32a8ae244ba1200da9535f3300ed888eb9ad16b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=search+pdf+documents+in+folder'. Another heuristic identifies this as a PDF link farm, suggesting an attempt to manipulate search engine results or direct users to potentially harmful content. The ML classifier strongly supports the malicious nature of this document.

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=search+pdf+documents+in+folder In PDF document text
    • http://files.daughtersofthenewmoon.com/uploads/1/3/1/6/131606687/1f3711b0fd.pdfIn PDF document text
    • http://files.runbikechaleur.ca/uploads/1/3/1/6/131636957/pakikeno_kasut_kewikawabonivun.pdfIn PDF document text
    • http://files.educationfoundationoflm.org/uploads/1/3/1/8/131857419/kamolikex_fereniwalom.pdfIn PDF document text
    • http://files.hayeducationgroup.com/uploads/1/3/1/3/131384429/rovuvanedofafenuf.pdfIn PDF document text
    • http://files.brightonebikes.co.uk/uploads/1/3/0/7/130775393/namamureka-jojegot-niluse.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/1/0436/8711/6965/files/77274911197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/xinirimiwidevurut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/toribogixitejiguriwobimax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/wipobimubomaxaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7807/4020/files/37983334715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8295/6443/files/lineroziki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6569/9478/files/backpack_mod_minecraft_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2799/5552/files/geometry_textbook_mcgraw_hill.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/16497612955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6284/8664/files/saints_row_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/71179957236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/tekkit_legends_sphax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/minecraft_max_enchantment.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B0 5500 bytes
SHA-256: cd29ca7f286c668890690a8a24b7fb969387e46c0d90d8720c3bd64d2281cd98
font_01_sfnt_off00007838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 9996 bytes
SHA-256: 0dc413bd3aa446b4d5ef1c11e4a98342a1255ce5d89a94c39711595a388c3fc6