Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7433cdf492e5a1c…

MALICIOUS

PDF

44.7 KB Created: 2020-08-06 17:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a85bbd2fb38c3816bda0d18d31771a1 SHA-1: 31fa952816a0968ff011e2ff41e07a8f4119e6ab SHA-256: b7433cdf492e5a1c52ae098b7107ba40614d2a2eb26a017a0e1061206ad6ea60
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'graphic design basics tutorial pdf' and the URL that triggered the malicious redirector heuristic. This suggests a lure to entice users to click through 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.com/pify?keyword=graphic+design+basics+tutorial+pdf In PDF document text
    • http://files.hivehoops.com/uploads/1/3/2/7/132740488/wozefimo.pdfIn PDF document text
    • http://fuguge.maggiezlatanova.com/uploads/1/3/0/7/130776445/7605901.pdfIn PDF document text
    • http://files.writingandrhetoricmke.com/uploads/1/3/2/6/132682848/paboxaparasidibij.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/1/0429/0173/3542/files/kaxirenit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4646/9793/files/the_princess_bride_watch_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/31977629591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/27582272489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vezugavusoperewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/6396059885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lexopiwalosadatijasaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/74143010370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/bls_2020_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/14227740406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6855/files/58388666039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0133/0339/files/71633204575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6598/9530/files/41382565641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7073/2950/files/gubelixiluxopenug.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 5

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_off00006eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFF 5588 bytes
SHA-256: 4b5a06db8d091920e7ce54deea5e09bb728d50f90ac0a78c9af9622c821331dc
font_01_sfnt_off000081f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F5 10536 bytes
SHA-256: a219df6704d231a2d41dfde626d0d710437f4c3e7a711351c4481dfc074f62a1

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