Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a41bf8b05901e6…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 20:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f06591f71c77b73bdd4d8dcfe98ee50a SHA-1: 19be6f96c5e7c5c23ad515fceb98324a12621834 SHA-256: 58a41bf8b05901e69ec98ca48b26b8dbd8279660459bf091743bd95c49f8c54a
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to domains associated with link farms and redirectors, with one specifically identified as a known malicious redirector. The document body, though heavily obfuscated, contains the string 'Razer booster apk', which is also present in the malicious URL, suggesting a lure for potentially unwanted or malicious software. 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=razer+booster+apk In PDF document text
    • http://files.mghbefit.com/uploads/1/3/0/9/130969046/bumok_jewolaxosavasi_jefuk_dujoman.pdfIn PDF document text
    • http://files.skyleslawfirm.com/uploads/1/3/1/4/131437513/xovufivunexen_zeletenilum.pdfIn PDF document text
    • http://kenof.affordabletherapytoronto.com/uploads/1/3/2/3/132302955/gabasabu_tuzobajuse_nopuroxafamibus_rafijugaduv.pdfIn PDF document text
    • http://jidivoj.theteenspire.com/uploads/1/3/0/7/130775778/sonusuju.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/1/0436/1535/5042/files/agropecuaria_brasil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2191/files/bosararutagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3175/5932/files/pabofivexonatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/raruwuxabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/48768716043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3346/7808/files/puxevotenolisofepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/niv_bible_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/pabasonojowopujek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9994/7169/files/31480599844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7433/0517/files/basuzerepubixifowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/xaselo.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 5

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_off000071dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DD 5040 bytes
SHA-256: 49f93d339c493411c51c982f1ed8e763011a9e902315d3468f91cbfd8507f412
font_01_sfnt_off0000831b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831B 10644 bytes
SHA-256: f44b3aa5c38e5ceea78cf50c046ed17a91907047cf6a9454ccb4af3117bf3441

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