Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8e9853cb139a43…

MALICIOUS

PDF

43.5 KB Created: 2020-07-28 15:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df538a5e9e540dfe904b9182b301ba6b SHA-1: 013eacf6b3b13c5816b8a63ede0b762ee9b19269 SHA-256: ee8e9853cb139a4387232d55e6e8dd0505d81ac3a13ea5a3fb3f07d8a99153ae
202 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. Additionally, it features a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The presence of a 'download button' lure further supports the malicious intent. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=opera+browser+free++for+macbook+pro In PDF document text
    • http://files.haidagwaiimagazine.com/uploads/1/3/2/6/132680853/2099364.pdfIn PDF document text
    • http://files.equineecogreenus.com/uploads/1/3/1/8/131856860/4888660.pdfIn PDF document text
    • http://files.9thwave.net/uploads/1/3/1/3/131378936/84970cbe.pdfIn PDF document text
    • http://files.preparetoperform.net/uploads/1/3/0/7/130776562/ed1fefb5ae562.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/1/0431/7508/4193/files/nelalexelugodozobimiwujin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5511/8501/files/funisubirudolukeruninuzes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/47766854013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8683/2035/files/10676933836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/3716935610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6872/6171/files/29819237669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/vinepuvozepurixuvuxuvibuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/zalovosurawexinugezanir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/xitix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mituvazejuremoposanizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/68299056184.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_off00006c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6E 5004 bytes
SHA-256: 9e740f4da75576f0fb75a213d25bc05b83c7b7bcb93bca381d25d8c2781c67bb
font_01_sfnt_off00007d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D79 10420 bytes
SHA-256: 3d5bd946c26d483b5810d1b165b9fe95b0db9f574568cdbb66b8634010b4fba8

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