Malicious PDF — malware analysis report

Static analysis result for SHA-256 654dc1ea45e43be0…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 02:21:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f72cbd13209af3b917eb505c29526fbb SHA-1: bc7f9ebbdb2839edccb2b4d62b0e016697a9917e SHA-256: 654dc1ea45e43be00c8bfbc281602b4114649fcee09efea921ab71075c1d86f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure for sheet music, and the embedded links are structured as an SEO link farm. 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.ru/pify?keyword=blue+devils+2017+metamorph+sheet+music In PDF document text
    • http://bopebad.mysgloan.com/uploads/1/3/1/4/131453177/xajalas-medafat.pdfIn PDF document text
    • http://files.yavmagazine.com/uploads/1/3/2/7/132710783/pimofemaxixotu_xujofimuwariguk_viwami_zovajijara.pdfIn PDF document text
    • http://files.rooibergsafaris.com/uploads/1/3/1/4/131454459/lufev-lomatazogamir-rifososipoxojem.pdfIn PDF document text
    • http://fadanado.gforceunlimited.com/uploads/1/3/2/3/132303410/2592131.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/1/0432/3239/5426/files/88062889612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/fundamentals_of_the_analysis_of_algorithm_efficiency.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8233/3851/files/4662367046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/21072714810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/benudifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/zotiludepizebur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/1902710284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/49471162410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0064/2211/files/84142604997.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 7

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_off00004646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4646 5828 bytes
SHA-256: 6e7a3755d250f92af588d776fb891f7363d5d0a28fadd58db8ff5f95e6564662
font_01_sfnt_off00005a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0B 14256 bytes
SHA-256: 71237c3c0b5fa83ea881fdd796bc82eb8c3ec72520046139da1a136277027159

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