Malicious PDF — malware analysis report

Static analysis result for SHA-256 4919cf2d0f899f74…

MALICIOUS

PDF

37.1 KB Created: 2020-08-10 23:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe3b5363e66ea512dbdda75ce9bb40ec SHA-1: eeaaea7247c9a6bbcfd108c3c9982ac1e2158335 SHA-256: 4919cf2d0f899f742238f41252e2888fd4bfe250efb7cbb20ac9184fecb0d69d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=storm+in+a+teacup+book+pdf'. The document body also contains this URL, along with numerous other URLs hosted on Shopify, suggesting a link farm or redirection scheme. The primary intent appears to be directing the user to malicious infrastructure under the guise of providing a book 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.com/pify?keyword=storm+in+a+teacup+book+pdf In PDF document text
    • http://files.bloomfieldhillsskiteam.com/uploads/1/3/1/8/131856170/lenurozegeso.pdfIn PDF document text
    • http://files.adonaisgoldendoodles.com/uploads/1/3/0/7/130775808/cf253.pdfIn PDF document text
    • http://files.premierpropertysvc.com/uploads/1/3/0/9/130969352/latavenuzuwudan-lelut-bejumomipele.pdfIn PDF document text
    • http://files.sunsetparkavenues.org/uploads/1/3/0/7/130775743/5690656.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/1/0431/0486/2375/files/90609659506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4282/4611/files/vunewosanotakogivaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/vumusoxokapapulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/39584637953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7712/4764/files/22930149642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3208/2594/files/poniwunaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2348/2535/files/assembler_des_fichiers_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/punixulomifobel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/jozarusinifif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/72163357961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budazasinopuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/roladezasamipopan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/56697258497.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5262 5396 bytes
SHA-256: 7942f78ce0b521112aa93ff63ead2823ebbc7dd6a73c5946e0e72fce8f56728f
font_01_sfnt_off00006496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6496 10252 bytes
SHA-256: 698e4361fda376721034fefa747c0c5e14956803d33f4bfcb1196f1d3ea6e2af

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