Malicious PDF — malware analysis report

Static analysis result for SHA-256 3135e1011584e0fa…

MALICIOUS

PDF

53.1 KB Created: 2020-08-11 16:54:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 897b36498bc0d2d6ed5b8ddbb75695ac SHA-1: 0d77192dbdec23db9231b9b707e52dedc4fd4917 SHA-256: 3135e1011584e0fa77f5b3a81da78e99ca17b41742b4188e0a1f29779748df58
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment 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.com/pify?keyword=algebraic+expressions+class+7+worksheet+pdf'. This suggests the document is designed to redirect users to potentially harmful websites under the guise of providing educational content. The presence of numerous Shopify links, while many are confirmed benign, contributes to a link farm strategy.

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=algebraic+expressions+class+7+worksheet+pdf In PDF document text
    • http://tibejon.awananet.org/uploads/1/3/0/8/130873826/pevigufupon.pdfIn PDF document text
    • http://files.fulfordelementarymusic.net/uploads/1/3/1/1/131164428/1054318.pdfIn PDF document text
    • http://raboji.fit4fun13.com/uploads/1/3/0/8/130814328/635225.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/1/0433/4298/7422/files/84353922872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/pdf_fillable_certificate_of_completion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/rixowukamutijusidom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/dugomope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2008/2590/files/muwezejixekugixiwurure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/20330161328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1826/2427/files/86229361722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/xazepefelifazaluwexen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/download_pangu_9._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/semakumoxowojipodoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/wewopebobijipugaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/phonics_activity_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/75944539343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/lenamekudeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/va_forms_10_2850a.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_off00008753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8753 5848 bytes
SHA-256: 8c04495d8c70fa3faf432a1545e7d4f8bd93334f0b780543d9fa1bceeb76c226
font_01_sfnt_off00009b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4E 13824 bytes
SHA-256: 40c300a6411a103cf23d8a540c89c506329f814d0dc0ac9e25b41133049604f8