Malicious PDF — malware analysis report

Static analysis result for SHA-256 b15683711ced785a…

MALICIOUS

PDF

40.7 KB Created: 2020-08-07 16:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dffdc8486d049f64979ef0177781d05 SHA-1: 10c7645d811603ef7415b90b8fe2de9a3f84d1d7 SHA-256: b15683711ced785a45171d2957e9bf9c6c96a5a6d3fa0d56b9525dcdbd23d95b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, ttraff.com. The document body and embedded links suggest a lure for downloading a PDF, likely to lead the user to a malicious site. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a link farm designed for SEO manipulation to distribute malicious content.

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=present+perfect+tense+exercise+pdf+download In PDF document text
    • http://tivewud.norwoodhighschool.net/uploads/1/3/0/8/130874058/wuzuxenajivan.pdfIn PDF document text
    • http://zifaj.thevillagemiami.com/uploads/1/3/2/8/132814930/taleniletodinasekopo.pdfIn PDF document text
    • http://files.theallinallministries.com/uploads/1/3/1/8/131856333/c694052fb4.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/1/0431/2891/4074/files/ledukokakazodas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/xaxegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/practical_intelligence_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6172/2788/files/58208684287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/attention_to_detail_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/rads_error_lol_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/22945391676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/zajiribiveruxixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1887/7090/files/75208178257.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
🗂 Part of campaign: eatdelirium.com 3 samples

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_off000060f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F9 5312 bytes
SHA-256: d7866baa3df0ebf2011cddddd7d6000a89568691a956c93f455a47f41634c6dd
font_01_sfnt_off0000732e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732E 10288 bytes
SHA-256: ddef486be3295f425fccf473f88a7e45635677a048db70df7a0be190e8e276b2

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