Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6398ad5c0bb9d1…

MALICIOUS

PDF

58.7 KB Created: 2020-08-24 18:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 852f0e1db58e78324cb51d74b0dcb992 SHA-1: 9b5506013fbb957a49b9e61b705a0acfd0de86b4 SHA-256: 5c6398ad5c0bb9d19ea3ef2d149e3228a6d0102126682fb7d7fe4fff4ef6e617
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The embedded URL and the document body text explicitly point to 'https://ttraff.ru/pify?keyword=tm+malaysia+annual+report' as the primary malicious destination, disguised as an annual report. While no scripts were extracted, the PDF structure and linked content strongly suggest a phishing or redirection attack.

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=tm+malaysia+annual+report In PDF document text
    • http://files.xtopherjames.com/uploads/1/3/0/8/130874646/xizereket.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6762/9730/files/sysmex_xs_800i_hematology_analyzer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0455/9519/files/kuralolatuliritegevelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/cetocort_pomada_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/noriwukabekuradofejufus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1780/files/79501627736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/99333666293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1806/7866/files/number_analogy_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/berazajelikuwobalawira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/7140/7015/files/4liker_apk_instagram_followers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/takuz.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9976 4900 bytes
SHA-256: 296e584ad1f6f3fe8b7c05a9579162acf878da963279a728200dc124127ed4aa
font_01_sfnt_off0000aa04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA04 11184 bytes
SHA-256: 86c9b2453841dc20f9349c334efe752f1252483ad8e0dda3dfad87bc6bca3ca5
font_02_sfnt_off0000cf9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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