Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa383fb8d8f869e2…

MALICIOUS

PDF

54.7 KB Created: 2020-08-04 14:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 833a5b2138a1f416496dcba25df27b84 SHA-1: 153e336963e29c18696372ad96ca64b3d17ee9ac SHA-256: aa383fb8d8f869e205e049e2263b76deb65ac6960e21821e66bf9a6b917cc3f7
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, includes a URL that is also flagged as a malicious redirector. This suggests the primary intent is to redirect the user to a malicious site, likely for further exploitation or phishing. The presence of numerous links, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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.cc/pify?keyword=3.+4+cambio+clim%25C3%25A1tico+global+causas+y+consecuencias+pdf In PDF document text
    • http://files.indytimes.us/uploads/1/3/0/7/130739132/30831f96f0b06.pdfIn PDF document text
    • http://files.westernmontanafurcenter.com/uploads/1/3/2/7/132740586/kipelokudebug.pdfIn PDF document text
    • http://files.kirstenantony.com/uploads/1/3/2/6/132695454/4324935.pdfIn PDF document text
    • http://files.riveroflifemedical.org/uploads/1/3/0/8/130874599/fuwitiziliri.pdfIn PDF document text
    • http://files.k16synthetics.com/uploads/1/3/0/9/130969151/9596281.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/1/0431/4788/6743/files/zesadex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/miwavewogonetufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5111/3883/files/10134253792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65028435792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/68063151510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9977/4364/files/metarhizium_anisopliae_control_biologico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/tigirum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/30788189074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/27960006083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/ruvar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/lefebesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.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 3

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_off00008a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A06 6044 bytes
SHA-256: 0810ab182c16c3491f8f72667ff926a3b78612d34b0b0a35386c4cc14b11d89c
font_01_sfnt_off00009e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E10 14708 bytes
SHA-256: a1d2dda61d7bec18ac999c37daec39972a9c58d124ce127d43c2dd0419d0e8e1

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