Malicious PDF — malware analysis report

Static analysis result for SHA-256 df8afb2e4cef4111…

MALICIOUS

PDF

40.4 KB Created: 2020-08-11 12:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ac1b35f219885f1907391e3b867180b SHA-1: 3cddf59975857e7729c4f2f2e2dd8b2529c4abae SHA-256: df8afb2e4cef4111331b75a14e6d4b1ecdbb72ef910dc9e2fb3cdbc0d07dea52
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link, however, directs to a malicious redirector at 'ttraff.cc' with a keyword suggesting it's related to IELTS test answers. This indicates a likely phishing or scam attempt, using a seemingly relevant document to trick users into visiting a malicious site. No scripts were extracted from this sample.

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/wb?keyword=ielts%20trainer%20listening%20test%204%20answers%20pdf In PDF document text
    • http://nalavikex.happinesspodcast.net/uploads/1/3/1/3/131383483/9212030.pdfIn PDF document text
    • http://files.veronicakedar.com/uploads/1/3/0/8/130874058/52707df064b5756.pdfIn PDF document text
    • http://files.plasticactionuk.co.uk/uploads/1/3/1/0/131070849/4e31b1b71eae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/pufanosatudajoxijij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/jopakilijofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/rakuwasugewijixoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/tunugadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0572/files/adverbs_of_sequence_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/zarosalaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/17513336736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/modifys_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/12950395481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9580/0475/files/57880408666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/30464517472.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000532a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532A 5004 bytes
SHA-256: 2beaff6427ab4b0929cab54b127efe513e80e1d7340480c45fddda51f391acc9
font_01_sfnt_off00006449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6449 10724 bytes
SHA-256: 8cffd9fa96f1a4c499caeb599d6be58e53f72e253cccbf9eec7a870a1f0e6f66
font_02_sfnt_off000086b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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