Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5563d21cd64cbcf…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 13:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b64288917e310ef92b77b3d25523f79 SHA-1: 93f71de169191c6b793aa6b65c66f170c0e0f4f0 SHA-256: a5563d21cd64cbcfa6add4b4cccb838365b3fad027240950f1fad1bdbdca34af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a clear lure for free sheet music, which is a common social engineering tactic. It embeds a link to a known malicious redirector, ttraff.cc, which is designed to funnel victims to further malicious sites. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to improve the ranking of malicious content. The ML classifier also strongly indicated maliciousness.

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=my+immortal+sheet+music+free In PDF document text
    • http://logod.johnnoblebarrack.com/uploads/1/3/0/7/130775677/lefabogavabavoburoj.pdfIn PDF document text
    • http://files.treehouse-creative.com/uploads/1/3/0/7/130739366/1454625.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/1/0437/8234/0770/files/temubisevaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/desew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/document_classes_latex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/norozowawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4386/2181/files/dosoguvadiragejevuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4889/8458/files/cartographic_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1694/8633/files/psicologia_la_personalidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8296/3349/files/7565138322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/70898140705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3565/5335/files/falolefazaxapokekozopu.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_off00007d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1E 5228 bytes
SHA-256: 59a3fc61ee9dde11bc65d11a05e1bdbe41c2422f87d78b4ae11ed4d774c09f60
font_01_sfnt_off00008ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECE 10704 bytes
SHA-256: 42e9f0537d4c70bac627a210ae4775af9f9637802597b773320b975514a9aaa2

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