Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1558b2dfb399881…

MALICIOUS

PDF

37.5 KB Created: 2020-08-22 08:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b7afc5cb7d223a40d7a1d97c2a5cab8 SHA-1: f5910606787709fee11404f0eccfeec22597cd22 SHA-256: c1558b2dfb39988147fb70dbea4a0bbb7b011de68adf0a5113232d1cda09e530
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text related to downloading software and a URL that points to a redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or malware delivery.

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=descargar+rise+of+nations+para+android In PDF document text
    • http://fugemu.teapup.com/uploads/1/3/1/6/131606457/mirazapelopimivaku.pdfIn PDF document text
    • http://files.americanlegionpost375.com/uploads/1/3/0/8/130874109/e7a54f5ba4144.pdfIn PDF document text
    • http://files.bethelagapeministries.com/uploads/1/3/0/7/130738765/fedojid.pdfIn PDF document text
    • http://pitidez.nabispen.com/uploads/1/3/0/9/130969077/3652065.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/1/0433/0687/7080/files/tugerivedisabuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/bitax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/tamegisurozavikobokigutuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/luxury_brand_marketing_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/force_and_destiny_character_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/psychological_testing_and_assessment_cohen_8th_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/calibre_ubuntu_deb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/betirinupoguburuduji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/27014018267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/65261055737.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/python_import_module_from_parent_directory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3433/7695/files/rowowomerepis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7443/5737/files/les_normes_afnor.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_off000054c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C5 5292 bytes
SHA-256: 1b0a65317d6156d1b27d72d4ede07ad46a1a341219f5f9e8b6d89dd35df37838
font_01_sfnt_off000066cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CD 10028 bytes
SHA-256: 9a487236a64bf38745ee6a90ca922623ce46e8e1843824447b09b660a56d9cb9

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