Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f143b1a08466657…

MALICIOUS

PDF

48.6 KB Created: 2020-07-27 15:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e225f40bce82b465f53750b91fcd82e8 SHA-1: 6770c194243ecf3500d408daf400a6f511b46020 SHA-256: 9f143b1a08466657ea9474f5b41d012bbd459d2294c4f551662c736b6459f035
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to sheet music, suggesting a lure. The presence of a 'download button' heuristic further supports a malicious workflow aimed at directing users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adagio+in+g+minor+sheet+music+orchestra In PDF document text
    • http://files.jrtimassagetherapy.com/uploads/1/3/0/8/130814065/xikamaxima-rajojezizo-fozofer-mirowezigoj.pdfIn PDF document text
    • http://files.thatfunnyshow.com/uploads/1/3/2/3/132302888/jorixi.pdfIn PDF document text
    • http://files.nicklasart.com/uploads/1/3/2/3/132302998/1367025.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/1/0428/1984/6311/files/75900215868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/81929244151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0869/5200/files/34755724937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0972/7912/files/29425601021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/simebavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/wipuzisubizakepofudasib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/gopazosobuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4769/7049/files/9506146316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuxekenosagulowagegur.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_off00007818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7818 5192 bytes
SHA-256: c727257b9bef3cd77b835bf0160bb196020d15998db333e43ae1ebc45d4af724
font_01_sfnt_off00008985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8985 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00009212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9212 10224 bytes
SHA-256: 335ef9f6e79ab75cac26dc3b5b9b67c5d06b4d58c5b9116d50da5d83b7e6f11f

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