Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc4b3d6a5ff09f5…

MALICIOUS

PDF

43.8 KB Created: 2020-08-17 08:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7aa625a33fd013dfc9e044c0d0e73c7e SHA-1: 3fdc05dab14aa7a4850a113929eb880663d4ba66 SHA-256: 9dc4b3d6a5ff09f5b1965b446f10a9e5d95578dd4183864c2938fc5b46f35821
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=cadbury+silk+ad+video'. The document body, though heavily obfuscated, contains references to this URL and other URLs hosted on Shopify and other domains, suggesting a link farm or redirection scheme. The primary attack pattern involves luring users to a malicious site via a deceptive link within the PDF.

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.com/pify?keyword=cadbury+silk+ad+video In PDF document text
    • http://files.museautoproject.com/uploads/1/3/1/8/131858661/gajizopogadinuvaxug.pdfIn PDF document text
    • http://files.bouncehopper.com/uploads/1/3/2/7/132740253/menak-bewirerige-fosizimukivimo-gagazopo.pdfIn PDF document text
    • http://biraput.sealsriflescopes.com/uploads/1/3/0/9/130969352/a54a97.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/1/0432/0090/5380/files/85377160680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/wemidogunuseminomisex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/ielts_writing_task_1_sample_answer_band_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/engineering_economics_analysis_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/82683603989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4062/0200/files/76355935327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/hyperbole_and_a_half_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/noxodoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/67555043654.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006da6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA6 5092 bytes
SHA-256: 4c1013f19d8ee6b2aadaf07f89c0e3ad16f9e83f3a5a54b44d6459dcd86add90
font_01_sfnt_off00007f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0D 10356 bytes
SHA-256: 0563193c60202f7bebaee0e34b3db0feb4e299a391c7f60aeb29445a094d78e0

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