Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea9b38a55dfd2df…

MALICIOUS

PDF

62.3 KB Created: 2020-07-31 09:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 979a36fc648c2a4139defe0fc63fe282 SHA-1: e9b44c4b56b156cec76242e063b403baae484b80 SHA-256: 2ea9b38a55dfd2dfe19d4565c5211b0871da11ccc47106fefd6312008ab0f8d4
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of an SEO link farm. One critical heuristic firing confirms a malicious redirector link to 'ttraff.cc'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the text 'Amblyopia definition pdf', suggesting a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

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.cc/pify?keyword=amblyopia+definition+pdf In PDF document text
    • http://files.discountstoragelubbock.com/uploads/1/3/0/7/130739073/pobupewesezepenodan.pdfIn PDF document text
    • http://files.johnmanubay.com/uploads/1/3/0/7/130775997/340f20b75684.pdfIn PDF document text
    • http://files.makeitcapture.com/uploads/1/3/2/6/132681728/3fdd90fb3c38.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/1/0431/2255/7095/files/96636487386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/8664939423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/49129472446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/juwunul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/xidemesixeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/lakifuwijewewajifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3966/1986/files/50337672353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/91759930539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/56866497478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/86848203103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/49514790039.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 1

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_off0000b19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19D 4932 bytes
SHA-256: 9375f01050f2ab4ae7edb53d92d0363c7e468e0ae5bdb80a13ecac1b1106da98
font_01_sfnt_off0000c24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24E 12188 bytes
SHA-256: d7f1a0da1152904fe7a202fdde49f891a46db18995f880cb917313b99a11fac8

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