Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ee7c4a2e3ddc6e…

MALICIOUS

PDF

50.2 KB Created: 2020-08-06 11:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48afc00dd63d569356abcf3fbed24276 SHA-1: e3615d557556c5b78f657a1110eea32f86d1f434 SHA-256: 52ee7c4a2e3ddc6ed2a5db3305de187ea8a6993b910d8a35928fae4a9ef626cb
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/wb?keyword=free%20intermediate%20piano%20sheet%20music%20pdf`. This suggests the document is designed to redirect users to malicious sites, potentially for SEO manipulation or further malware delivery. No scripts were extracted from this sample.

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/wb?keyword=free%20intermediate%20piano%20sheet%20music%20pdf In PDF document text
    • http://files.airlandandsee.com/uploads/1/3/1/3/131380163/4104883.pdfIn PDF document text
    • http://ramire.brianwhettenart.com/uploads/1/3/1/6/131607029/d972630229edd.pdfIn PDF document text
    • http://files.meredithodekirkabroad.com/uploads/1/3/0/7/130775934/nedog_bevipalunureb.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/1/0434/8346/3832/files/35470334101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4095/4773/files/fantage_online_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/66879304718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7308/files/11852736052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/5144388508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/92758092796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0124/2015/files/3287452479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6206/files/76154461142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/waller_isd_taxes_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/65645858707.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/tigivupekunimigenozijemej.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 2

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_off00007885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 5316 bytes
SHA-256: 354ad99e60b8c05da11a8dbd0f91dc76eb4f6d589eb20e4e907814288779964c
font_01_sfnt_off00008a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6F 16680 bytes
SHA-256: 4118513bfd4ca79fc5a03b54506cf322daf03652a3accb792cd2f6ae4f582af4

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