Malicious PDF — malware analysis report

Static analysis result for SHA-256 be3ea5919275e8bf…

MALICIOUS

PDF

66.2 KB Created: 2020-08-19 01:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d90c1dbc37247cb06fd662662b46718 SHA-1: e7cd919685ab7dfd3b1a50bc551122cf5dc69c1b SHA-256: be3ea5919275e8bffdb864bf3718deb2ea852ec217f379596e7b710f4d92449d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed to host SEO-optimized PDF files. One prominent link, https://ttraff.cc/pify?keyword=edvantage+science+ap+chemistry+2+answers, is identified as a malicious redirector. This suggests the document is part of a phishing or scam campaign, using academic-sounding lures to drive traffic to malicious infrastructure.

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/pify?keyword=edvantage+science+ap+chemistry+2+answers In PDF document text
    • http://files.tonibeutler.com/uploads/1/3/1/8/131871854/3651723.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0428/5507/1900/files/tugemusapitona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/bekewulamavegokam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0493/4814/files/8255958976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/apache_hadoop_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/38455016272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/28401703939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/35406776246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/third_point_campbell_soup_presentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3822/9158/files/sufivevuzamul.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3B5 1684 bytes
SHA-256: 8b69ad8bf8706a8de8604f0485c67fb25a23b24d50174afbb8bbf061f3c53837
font_01_sfnt_off0000bc19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC19 5796 bytes
SHA-256: 7ac99de2782afd1f40dc25db6780d63b6b92a71000fc3a3e4ba642866ff65461
font_02_sfnt_off0000cfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFCA 14064 bytes
SHA-256: c7efd472f4445c70e3d59fb44f8e65cdfed602153944366a0ac5a6152a6b69ad

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