Malicious PDF — malware analysis report

Static analysis result for SHA-256 98051f97e109a798…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 11:58:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b94eb89036d21d2e694dc28e8642aba SHA-1: acfa553afff0cc794dc79910c98a1efd1c332887 SHA-256: 98051f97e109a798f4965d42f39cb4ea0c6678f99c9b4351d2fe2d05a70c5c5a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a malicious redirector link disguised as a download for 'Internet manager for mac os x'. The document body and heuristics indicate a social engineering lure to install a browser extension or update. The primary malicious IOC is the redirector URL, which is likely used to deliver a second-stage payload. No scripts were extracted from this sample.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=internet++manager+for+mac+os+x In PDF document text
    • http://files.artworkbyrenee.com/uploads/1/3/0/8/130873894/1514473.pdfIn PDF document text
    • http://files.andreapizzoferrato.com/uploads/1/3/1/1/131164210/4255511.pdfIn PDF document text
    • http://files.heritageheroesptsa.org/uploads/1/3/1/0/131070378/0a34c625b.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/1/0433/1097/3083/files/18008886218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/pdf_pendidikan_agama_islam_kelas_12_kurikulum_2020_revisi_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/95503904264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/ss-_8_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/water_hammer_in_pipe_line_systems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/39208183892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/suvorobaxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1502/0449/files/46274882442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3459/9843/files/brush_pen_lettering_grace_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5031/files/principles_and_applications_of_aggregation_induced_emission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/vopawijowik.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6066 4912 bytes
SHA-256: b65922194620e3c3a2c43e28c8bacfb92538932b3821542160e9a2790b9b30fe
font_01_sfnt_off000070fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FA 10532 bytes
SHA-256: c39364401b283f99d16738526065a997043a6f142c15010d9737b04843c6070f
font_02_sfnt_off00009500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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