Malicious PDF — malware analysis report

Static analysis result for SHA-256 2924a5ceadff4dea…

MALICIOUS

PDF

51.3 KB Created: 2020-08-12 14:46:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88d53beb1d840e1b78b7f1a47aa12765 SHA-1: 8a1787d2cdd1df9581319ce8be019cda43e20fa6 SHA-256: 2924a5ceadff4dea9216f56703ec66b0ce5431e33163fa63f33174504c23add3
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body contains text related to 'baixar free pdf compressor' and the malicious URL, indicating a lure to download or interact with malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly suggests the primary intent is to redirect users to harmful sites.

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=baixar+free+pdf+compressor In PDF document text
    • http://files.baileykidsmusicals.com/uploads/1/3/0/7/130775275/fd76a9256b224.pdfIn PDF document text
    • http://files.ridgechristiancentre.co.uk/uploads/1/3/0/8/130813732/4532602.pdfIn PDF document text
    • http://niroxez.charlottechiphi.com/uploads/1/3/0/9/130969723/f1797.pdfIn PDF document text
    • http://files.fleurspressed.com/uploads/1/3/1/6/131606343/mufububusolu_mojiwobun_fovegese.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/1/0428/8161/3987/files/series_7_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/zixubovujasumupoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/18382385800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/industrial_applications_of_machine_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3038/3514/files/jquery_ajax_ebook_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9358/9142/files/66488454379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/getiwukel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1359/4526/files/budget_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/vozuvofoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/6891331576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/kagan_mats.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 8

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_off00007d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7E 4988 bytes
SHA-256: db3be934f7dc21220a02e8b0ad089b915a5c079929f05cd0d76b4408b80bba15
font_01_sfnt_off00008e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E70 10356 bytes
SHA-256: ea2da48a31969b1aeee68df509a86fe02c19fd14ad4af3a7de2e4ee711c38613
font_02_sfnt_off0000b1ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1EE 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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