Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a8cd18de30d4ed3…

MALICIOUS

PDF

51.4 KB Created: 2020-08-06 20:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c75847ef6df6b5ec61ba3b33f40ca56f SHA-1: 9076388d553346e94c018d208a3b6f3c2f01a7b5 SHA-256: 7a8cd18de30d4ed36fb2170f3789f7811193af5a77e08f5894e085c604c5712a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to external resources, masquerading as training materials, which is a common lure for phishing or malware distribution. The primary redirector URL, 'https://ttraff.com/pify?keyword=certified+ethical+hacker+training+pdf', is flagged as malicious and is part of a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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=certified+ethical+hacker+training+pdf In PDF document text
    • http://files.timbertheft.org/uploads/1/3/1/3/131383478/vebarurogafak.pdfIn PDF document text
    • http://files.brownfieldselementary.com/uploads/1/3/0/8/130813781/8b5b0cb.pdfIn PDF document text
    • http://zekikax.seatgear.co.uk/uploads/1/3/2/7/132710797/niketaxatobusag-vabelowitaroz.pdfIn PDF document text
    • http://dalamer.goleakdetectives.com/uploads/1/3/2/6/132682787/0053b7a8a21.pdfIn PDF document text
    • http://files.arilaurakreith.com/uploads/1/3/0/9/130968943/8560670.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/1/0433/8686/3783/files/70675032887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3282/files/78210217474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/35794836361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9996/2024/files/dojage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/88096987360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/3997430356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6381/2002/files/catalogo_andrea_botas_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/47095475727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0487/9271/files/47434803172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0394/4858/files/46872364750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8353/9366/files/4768414979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/30056182618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/wuzedisotelabusobovu.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_off00008948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8948 5208 bytes
SHA-256: e1fbeb26719388efa9e56a929570b383c6f33306d1983c4e71e12c3166a4791b
font_01_sfnt_off00009afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFA 10848 bytes
SHA-256: 547dff568ac25ba13b9a0454c66975457576cd499147e1835f694545d8041d38

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