Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04458f56e9d78b5…

MALICIOUS

PDF

35.0 KB Created: 2020-08-21 00:41:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e18746b74673a8e8dbea7a4fd54a6da SHA-1: 109579d96fdf8a02111e6bbdd009e6b04d5c4e29 SHA-256: c04458f56e9d78b58cc37b82a486b15f033427c6dec3a26f7c340538dc242751
194 Risk Score

Malware Insights

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

The PDF contains a large number of links to external PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented as an oscilloscope user manual. This indicates a likely phishing or malware distribution lure. No scripts were extracted from this sample.

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=oscilloscope+user+manual In PDF document text
    • http://daxufuzum.menomoniesaddleclub.org/uploads/1/3/0/7/130776659/gapozakenudi.pdfIn PDF document text
    • http://files.cganim8tion.com/uploads/1/3/1/0/131070113/nesazivivafemakodusi.pdfIn PDF document text
    • http://files.integraltrainingllc.com/uploads/1/3/0/7/130776413/6394342.pdfIn PDF document text
    • http://files.teacherswritenow.org/uploads/1/3/0/7/130740571/wobax.pdfIn PDF document text
    • http://files.aplincookgardner.net/uploads/1/3/0/8/130814205/5797772.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/1/0433/8188/3047/files/bornoporichoy_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1840/1430/files/bosquejos_evangelisticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/27717962877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1879/7724/files/95589237449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9058/3458/files/icnd2_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4217/6150/files/futunikupumusugan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/visiting_card_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/5707580453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4868/9050/files/2758594907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/vedubowezofopupolokip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1812/5465/files/68617481684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/car_diesel_engine_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3740/8936/files/93041336846.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 6

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_off00004c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4A 5104 bytes
SHA-256: ef7a1e2147c52b1ed2437200f46e5b5f9770936940642d888c9f3ecdb2888fa8
font_01_sfnt_off00005d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D83 9976 bytes
SHA-256: cf423ec2a7dd3ea6ac606bf0ec3a48cc251af597718057a529acf5bdda4c8c10

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