Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0433205e7f46d4…

MALICIOUS

PDF

47.2 KB Created: 2020-08-20 21:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec57713b3dbed13b0bd3f7144a19d51 SHA-1: 6051841b95091f24cae9c134bdd7d8ef1f4ae330 SHA-256: 4f0433205e7f46d40bd8e3aa2a18a79d44c75c55a42c626f52fabf1532703183
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links to other PDF files. One of these links points to a known malicious redirector. The document body contains garbled text but also includes the malicious URL and several other PDF URLs, suggesting a link farm or redirection scheme designed to lead users to harmful content.

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=bloons+tower+defense+3+mobile In PDF document text
    • http://files.shopluxetrend.com/uploads/1/3/1/8/131871704/729587.pdfIn PDF document text
    • http://sikujos.agefriendlysarnia.com/uploads/1/3/2/6/132696056/lerur.pdfIn PDF document text
    • http://files.aagymnastics.net.au/uploads/1/3/1/8/131871821/5ff8af.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/1/0429/8326/0314/files/wibetexulusuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/guzirukusenewapiven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9290/9987/files/cub_cadet_ltx_1040_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/19838961290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/drake_take_care_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/95663244118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/gijoros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/penexelevavafugirudizet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/kufifelakesefakofujuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0874/3834/files/minecraft_mods_1._8._3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6700/7386/files/adjetivos_posesivos_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/bukuniwore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3889/1419/files/suviwajiguso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4363/3822/files/34508878446.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B5 5288 bytes
SHA-256: dc52d969dcd5133e707f81f4379d3a95c9ae241aeeb161a312d8a291fbccf1c9
font_01_sfnt_off000084af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AF 13912 bytes
SHA-256: 47acfc2d9ebf1d47733326e178e1694378d6ccff38e1241b494801148f7b90ff

Open this report in the interactive analyzer, or submit your own file for analysis.