Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50a3f8ee19b7fde…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 14:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 898620d2b1aec6c5121b0a6fa8c36104 SHA-1: eb1ff3f13b06860656ed6ec5c4ab5899c55a2e2f SHA-256: f50a3f8ee19b7fde34e5979dfe41d0ae99c62ef762684c76887b69d7306f711f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with multiple links pointing to Shopify and other file-hosting services, disguised as piano sheet music. One of the primary links, 'https://ttraff.com/pify?keyword=bts+fake+love+piano+sheet+music+pdf', is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct payload execution.

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=bts+fake+love+piano+sheet+music+pdf In PDF document text
    • http://files.jeromedelapierre.com/uploads/1/3/1/1/131163533/8638015.pdfIn PDF document text
    • http://files.collegewomensclubofdayton.org/uploads/1/3/1/4/131483317/279d123.pdfIn PDF document text
    • http://files.stalbertlfe.org/uploads/1/3/1/0/131070207/467704.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/1/0430/0960/5791/files/faferuxotumaxamuwoporive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/80141481479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1711/7601/files/agnosias_visuales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/wepedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/catalogo_avon_campaa_16_2020_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/lesenexoboriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6015/8873/files/reasoning_backwards_gregg_young.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/rovuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4155504299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/livro_zen_budismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/169149395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/katuwito.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8C 3052 bytes
SHA-256: bf3d8f43df4c91aa2fd7cbfe575fbe5b3de0d66130e7d815b2bd352a2a3ed3e0
font_01_sfnt_off00007a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A63 5472 bytes
SHA-256: 752061cd48f78ff5574b7649a160cb7d19ed2f96b4ef2abfed1ff1cb7f0376b3
font_02_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 16316 bytes
SHA-256: 639bca214c4bbec9e96b0f36535e5391364d8cf6e476ae19efeee21196a7b74c
font_03_sfnt_off0000bfe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE0 16080 bytes
SHA-256: b0deecbfe9503f8e1956f768ce99028e18d7de30c43ed8f39a60d8175b81601b