Malicious PDF — malware analysis report

Static analysis result for SHA-256 693c24eec1752d5d…

MALICIOUS

PDF

118.7 KB Created: 2020-08-08 08:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 491370a46452c91284fbdbd95eacb02c SHA-1: 0455391f184a8f23e8935b6a2faf0c749421dedc SHA-256: 693c24eec1752d5d5fa53d18c47272012dab43cc3e9d05c17e97242a2c955eac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.cc/pify?keyword=trends+in+neuroscience+and+education+pdf`, which is flagged as malicious. This indicates a phishing or scam attempt, likely using a document as bait to drive traffic to malicious sites. The ML classifier also strongly supports the malicious nature of this PDF.

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=trends+in+neuroscience+and+education+pdf In PDF document text
    • http://files.michelleflessa.com/uploads/1/3/2/7/132710700/1fc6e3.pdfIn PDF document text
    • http://files.blankaphotography.com/uploads/1/3/2/8/132816066/29c7b902454a.pdfIn PDF document text
    • http://files.mindfulstrides.org/uploads/1/3/1/8/131872054/kidififewejagazir.pdfIn PDF document text
    • http://files.enviropolicyblog.com/uploads/1/3/1/8/131856162/mobizipobili.pdfIn PDF document text
    • http://files.aoifesodenglass.com/uploads/1/3/0/8/130874598/lilivafomusug.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/1/0429/9502/4033/files/60151444704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1130/9719/files/vevunelisaloduwol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6742/4412/files/abbyy_transformer_3._0_pro_pl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/xiziger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/65332127240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/99923340171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6802/files/sanitation_exam_5001_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3609/files/kunotobejekitulamona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/61375296644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/wobisifapadilomunojip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/99837084071.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_off00018e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E0D 5064 bytes
SHA-256: d7f9bb5d19101c5da7f51a35d3cf201a3acc24b6b7213d506a040805f371d5db
font_01_sfnt_off00019f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F54 14484 bytes
SHA-256: a9101aff0318e8b3151fa1e4ef9b15568adfbb1a314d81e5d3237bcd211caca3

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