Malicious PDF — malware analysis report

Static analysis result for SHA-256 d355194c9a8cbd3a…

MALICIOUS

PDF

35.8 KB Created: 2020-08-02 16:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64f57f56603bba1b13495749a41d38fe SHA-1: d89d412ef6caeb55d3853024a3e4b5dcd51e04ce SHA-256: d355194c9a8cbd3a54293a3b48c0c27caa3ad31ca3c21582be5b6ca0e6c15e8c
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate this is a link farm designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains the malicious redirector URL and several other URLs hosted on Shopify and other domains, suggesting a broad distribution effort.

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=sick+puppy+riptide In PDF document text
    • http://files.daintydande.com/uploads/1/3/2/8/132815748/xefajuxomi-podizuwurez.pdfIn PDF document text
    • http://files.bergenphotography.net/uploads/1/3/2/6/132682204/1172733.pdfIn PDF document text
    • http://files.rocnifinland.net/uploads/1/3/1/3/131383954/4317207.pdfIn PDF document text
    • http://files.rijkenspark.com/uploads/1/3/1/3/131398091/didiburalev_lulonulomirumi.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/1/0435/2396/5080/files/gazuvusopuluvufet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4446/9927/files/finejufelasoxog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/14165886451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3589/7505/files/sketch_license_key_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/zulixiradid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2834/0123/files/99510305629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/jofetudakeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8111/3506/files/giant_carp_sekiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5930/4858/files/anaconda_rename_environment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/kuzazumivalulub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5986/1909/files/78104514891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/48573080976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/puvefigigiselafezuti.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_off00004ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF5 4916 bytes
SHA-256: 7e251f075f8273e44ed27cd8f43423404b8a38dfc4e1c58c00a86a5af71f8e48
font_01_sfnt_off000060ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CE 9876 bytes
SHA-256: 55763c34004906b81a9f405805d345c0e258853482e7b6695eff279d7c65b10e

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