Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bc0c67ccefa710c…

MALICIOUS

PDF

35.9 KB Created: 2020-08-26 23:32:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c664bde5cb80fd5624a22b088426d54b SHA-1: dadeebb1acbc0fd6c0663e9105938e53e47fcfa7 SHA-256: 4bc0c67ccefa710cce2172164c6bcfbf463f94d1850bc9a475f7754d067591b3
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged the document as malicious. The document body contains text related to SEO and potentially misleading content, suggesting an attempt to manipulate search engine results or lure users to malicious sites. The primary malicious IOC is the redirector URL.

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.link/pify?keyword=simon+mcbeath+competition+car+aerody In PDF document text
    • http://files.delaneype.com/uploads/1/3/1/0/131070938/vomisatinenasuj.pdfIn PDF document text
    • http://files.roshanthimmiah.net/uploads/1/3/0/8/130874217/6b06410e16d.pdfIn PDF document text
    • http://files.summernightsnetball.com/uploads/1/3/1/3/131380504/164863.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/1/0435/6187/7665/files/ebay_guide_louis_vuitton_date_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/sazadukolow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/define_mergers_and_acquisitions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5591/files/mujokipapimarubomobij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/fixelirizodamuwezafixutad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1723/9704/files/85862328689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/important_full_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3415/6967/files/nobomofokagilizekef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5370/1525/files/40409657026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4573/2007/files/set_back_button_color_android.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_off00004d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D26 5448 bytes
SHA-256: 813e1611f22831e59c6c0e238233441b3d5661583074d9e337baaf655f2fce00
font_01_sfnt_off00005f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6D 9968 bytes
SHA-256: b75ec03800b1fd6976c0c83a9b6da9b2cfb1011db2e0a2d031cf395b88ac3833

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