Malicious PDF — malware analysis report

Static analysis result for SHA-256 4507d387feebee3b…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 05:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db2986a0be5fedd7392fce4368417023 SHA-1: 57303487e736aa8d8ee604b581acc0dc11cbbf93 SHA-256: 4507d387feebee3b49241f9601a9d2bba4d5219606e88aa826b49f7c192fb26c
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to a known malicious redirector, ttraff.cc, which is disguised as information about a BTEC qualification. The document also functions as a link farm, embedding numerous other PDF files, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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.cc/pify?keyword=btec+level+2+award+performing+arts In PDF document text
    • http://vajinolux.danehillhistory.org/uploads/1/3/1/4/131406717/3851561.pdfIn PDF document text
    • http://files.rosebayrotary.com/uploads/1/3/1/3/131383949/c8b25f2.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/1/0436/1833/6925/files/xovipekixutigowuzomixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2993/8855/files/vawozibemupaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/photo_composition_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/mimefawelimonefijabegodex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6389/2376/files/bootstrap_2_column_form_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/animal_wise_virginia_morell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/66832381943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/madaruva.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

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_off000058c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C3 6452 bytes
SHA-256: a7a7de384d53cdcb89cda2200443df3fdda661ee1a034c7f49e952d0f50b9eba
font_01_sfnt_off000068c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C6 5808 bytes
SHA-256: 60f8c41a4b82f018a3786c092a155e6540fd29e94a8e1cc4095c75c3e0c89af2
font_02_sfnt_off00007c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8D 10504 bytes
SHA-256: e7adbe866a0cbd63cb03fed3a6bece9090f9cf10845166438db0974ed4f5cecd

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