Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a28a93f008ac34…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 03:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97981cec9e0e222f6daf04133b406be4 SHA-1: acea66739110f15f5046bbec573fcd4f139fc4fe SHA-256: c5a28a93f008ac3415a49dc0ae7a4bb3cb2ee019d6bc628b02e0242bf49b911c
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded external links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=christian+devotional+songs++tamil, which is likely used to redirect users to a malicious site. The document body contains garbled text but also includes the same suspicious URL and several Shopify-hosted PDF links, some of which are confirmed benign while others are unknown.

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=christian+devotional+songs++tamil In PDF document text
    • http://files.thehearthosaka.com/uploads/1/3/1/0/131070452/wixufava.pdfIn PDF document text
    • http://files.jandgguns.com/uploads/1/3/0/8/130813841/b35a696c1a9dc0e.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/1/0437/1572/3414/files/dewerimejax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30106301206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1219/files/mods_for_minecraft_on_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/fitekebasapegene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6182/1092/files/83053636408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/kizol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/fegeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/cuisinart_ice_cream_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/67123212957.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 3

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_off0000607b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607B 5204 bytes
SHA-256: 809aca9c9981babcc073139d103e53fb080c804b1deed0f23ec965c573e52098
font_01_sfnt_off00007204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 13860 bytes
SHA-256: ecc6897743a20fbdff32abe3e936b85d6f67c5c4c8b9f1c5efc1b74a87294660

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