Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a333783045a4192…

MALICIOUS

PDF

49.3 KB Created: 2020-08-20 01:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0312c01421c827e5f0cb6460e22e4278 SHA-1: b3ddcf352b07b3270a3bf7dc9bf95110ab700f45 SHA-256: 1a333783045a419216c38909a0530af832a3ee0c6fa6a55ee45d350da678db08
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, designed to appear as legitimate educational resources. The primary link, however, leads to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam campaign aiming to direct users to malicious content under the guise of educational material. 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.com/pify?keyword=maths+genie+forming+and+solving+equations+answers In PDF document text
    • http://files.thekravmagaeducator.com/uploads/1/3/1/1/131164100/973005.pdfIn PDF document text
    • http://gogobov.misneraudioprograms.com/uploads/1/3/1/6/131637047/nonotat.pdfIn PDF document text
    • http://files.goodztingboutique.com/uploads/1/3/1/6/131636825/zevarusazal.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/1/0429/2096/8358/files/cambridge_primary_science_stage_4_learner_s_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/bombastic_words_with_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/78448545374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/29183394491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/que_es_asepsia_y_antisepsia_en_enfermeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/38615008812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/95900250670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/69817085529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/69407574963.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 2

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_off000077d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 5604 bytes
SHA-256: 471d461c1450474cf92cdf0f6e9eb31d1fae680d51bc59ac3d221695b5edb69e
font_01_sfnt_off00008aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 14648 bytes
SHA-256: 9c7df1ff4aa91ff0cc79d549dddbfd4c23ffaa6a84880f814948cebae1fe960d

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