Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ec550b47edcc87…

MALICIOUS

PDF

42.4 KB Created: 2020-08-02 13:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7b588d1ed87b6d87f177763909ab6fb SHA-1: 853aa7dbccff8404d31ca943113c5b2418bbc0d5 SHA-256: a8ec550b47edcc870fe0d24a963ede8f1cbe1fadce88594ce6283d31236bd4c8
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.com', which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness. The document body contains text related to 'Ge electric water heaters' and the wkhtmltopdf tool, likely a lure.

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=ge+electric+water+heaters In PDF document text
    • http://files.joedyton.com/uploads/1/3/0/7/130739593/vavoxikubixolipubego.pdfIn PDF document text
    • http://files.evelynjophotography.com/uploads/1/3/1/3/131383934/forubuga-dowisuzonove.pdfIn PDF document text
    • http://files.coastalleadership.net/uploads/1/3/0/8/130874676/9627383.pdfIn PDF document text
    • http://files.chiroclothingco.com/uploads/1/3/0/8/130874110/5056300.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/1/0430/0007/0307/files/35624302176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/40879707385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/vumivuzisujigek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/22207629818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8040/8474/files/pejixuxatidusujinuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/8034367339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/gaviwomiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7406/8390/files/jexolojat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/68737175384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/31855603102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/tarot_nano_manual.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 7

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_off000066ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EA 5008 bytes
SHA-256: f672dc7a11c51932e7840cd465d0d4fbb265345de3905ea8137f6b3f45d1fbcf
font_01_sfnt_off000077fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77FD 10860 bytes
SHA-256: 8b6e5f102e762597e51ca5d116047ac19b9a8b75b0c45bec7cdbca8f1d5c9342

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