Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef48437e06728c10…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 10:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a8228c65b6e1abcc57394e5d05c680a SHA-1: 879cac3dcaa78e7caa39aa55449de4ff6c2ce579 SHA-256: ef48437e06728c1096e585b8a29c82ee228429b2f2bc967e8b174b021cb805c5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=free+spelling+test+template+10+words', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to lure users into clicking malicious links.

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.ru/pify?keyword=free+spelling+test+template+10+words In PDF document text
    • http://files.midwaytacticalgear.com/uploads/1/3/1/6/131607440/jusipazom.pdfIn PDF document text
    • http://jovozo.maenad-films.com/uploads/1/3/0/8/130813478/1327599.pdfIn PDF document text
    • http://files.shantellstricklanddavis.com/uploads/1/3/2/6/132695492/7880082.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/1/0432/3501/6863/files/85480564557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/modern_embroidery_patterns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0227/7542/files/76999573524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/45044870165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/lakabupigumopejuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9097/5647/files/azitromicina_solucao_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/guxaraxamobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/57469662958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/65299115017.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 6

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_off00005dd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD6 5520 bytes
SHA-256: 642e5769bcc3dec8a5b09c2f97113a9c8d174fe1aa907609b86a4e0c0dcce7a6
font_01_sfnt_off00007092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7092 9780 bytes
SHA-256: a2fdda904838f865bd300aa4ede14e93281c909f35b570dcc1fd5b47cf2e8b4d

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