Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d2aa785799c2f8…

MALICIOUS

PDF

40.6 KB Created: 2020-08-19 00:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b32e7872c121fb270c99f3f0ee19e41f SHA-1: 4054412f1b8ea1734cab1f514bf30b8230645c5d SHA-256: f8d2aa785799c2f811b1a0c990515ff23aae9cd0d0646e5d3a9cb352425f7c13
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to direct users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=easy+disney+piano+sheet+music+pdf, which is likely used to redirect users to a further malicious destination. The document body, though heavily obfuscated, contains references to this URL and other PDF links, supporting the SEO link farm detection.

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=easy+disney+piano+sheet+music+pdf In PDF document text
    • http://gajavum.brandywinemartialarts.com/uploads/1/3/1/6/131606156/e843efbdd2a4.pdfIn PDF document text
    • http://files.revdonnarenfro.com/uploads/1/3/2/6/132681767/sabat_gazezirutesuki.pdfIn PDF document text
    • http://files.johnnybeerling.co.uk/uploads/1/3/1/4/131453226/lefamefivugabe.pdfIn PDF document text
    • http://files.smartbrainenglish.com/uploads/1/3/1/0/131070469/6594031.pdfIn PDF document text
    • http://files.usmma-nepa.org/uploads/1/3/1/3/131383777/nujigiduluriwelafew.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/1/0431/9540/0356/files/61903789209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/fulojalov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9996/files/nekogav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/43754916158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/22883848246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/aptis_test_samples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/sowefomaneligozepowomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/4424891989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/benchwork_and_fitting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/dezizesigafud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4048/9122/files/kawelutebipidirofinokelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/76821568557.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_off00006102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6102 5324 bytes
SHA-256: f6396c830885b202d28935df6294e09c8cec7e94a336c3e652443715a9893ebb
font_01_sfnt_off00007302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7302 10088 bytes
SHA-256: 28f5ab43fdd56662a39ddc14c47477540e5360eebc58a0f1f9aecce464e937fd

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