Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd73c837bdc0de96…

MALICIOUS

PDF

48.7 KB Created: 2020-08-19 01:56:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3cbfe33c8e0e7714c2d2aff673422a6a SHA-1: 9e569c511cc8239ccc4688df2de3da799a4fad7d SHA-256: cd73c837bdc0de9617642e3677f449ea56dac0983295a18f6a478d4bc5d24286
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests a phishing or scam attempt disguised as a resource for image editing, aiming to lead the user to malicious 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.ru/pify?keyword=background+photo+hd+for+editing In PDF document text
    • http://files.mcgrathirishdancers.com/uploads/1/3/1/3/131380564/kinorivujokitewi.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/1/0434/4994/2176/files/81993316427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3748/1365/files/furepofagozipagigapuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/2614689655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3917/6342/files/64596940681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5050/6152/files/65862149879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0678/files/49154321703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1807/0685/files/bukusugutarejafabakod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/fokirolalerinigujunit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/36479114407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/44622847024.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 2

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_off00008162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8162 5320 bytes
SHA-256: 8303b3cb68efc66e03ece824be8e6bf6cbb0e7891d13a4f134d3bdd37ec4332e
font_01_sfnt_off00009371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9371 10156 bytes
SHA-256: 20ea65c6546646ee5d2221cf7d7e727502c43de9c1b41af8b840feedb06334eb

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