Malicious PDF — malware analysis report

Static analysis result for SHA-256 11ef55c7896b7ae6…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 17:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ed563eb54162ecd87906c8b14a150822 SHA-1: 0acb3ed3cdde3ba4c6074851ccad6d7627ec1353 SHA-256: 11ef55c7896b7ae60020778930676ca1fd8714f273f24157161a89df5c05c6c2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded links, with a primary link pointing to a known malicious redirector. This redirector is designed to lure users with keywords like 'carbon copy cloner free mac', suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links further supports a link-farming or redirection scheme.

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=carbon+copy+cloner++free+mac In PDF document text
    • http://kulamako.sabinejewelry.com/uploads/1/3/1/6/131607407/mabipug.pdfIn PDF document text
    • http://files.tedxunionvillehs.com/uploads/1/3/0/7/130740480/662c2982.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/1/0429/2929/1427/files/22822089075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/vitamina_d_alimentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6392/7206/files/bimajomitatitexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51906755497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/xijojujepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2900/2390/files/9554626850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7389/2515/files/c_web_browser_open_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0596/7514/files/dg_a_b_c_d_checks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/arbor_acres_plus_broiler_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/wakezugudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/tulubirorimer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/20416364969.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_off00005e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E49 5132 bytes
SHA-256: 5624916a9759814932cd75ead8561c11b2db5f531837a81f559e333e00c2512d
font_01_sfnt_off00006fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 10580 bytes
SHA-256: 2906020515d7e9b409142c9660033b1328c00e46247db2ec6815b1a65a446f38

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