Malicious PDF — malware analysis report

Static analysis result for SHA-256 842fc3514019f46a…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 06:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac96992fa2d47c2e9ef01e7af1baa2dd SHA-1: c22eb56ce6cb331df1d75ca8f43031073bf6cb20 SHA-256: 842fc3514019f46a99b22a8b5f24c66a89be15c2c61a657ffa3eb7cb23008429
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/wb?keyword=inspirational%20graduation%20speech%20pdf'. This redirector is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains references to this URL and a large number of other PDF links, suggesting a link farm or SEO poisoning tactic to distribute malicious 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.com/wb?keyword=inspirational%20graduation%20speech%20pdf In PDF document text
    • http://todekate.whisperwindaussies.com/uploads/1/3/0/9/130969862/6177889.pdfIn PDF document text
    • http://noburiv.astridweversphotography.com/uploads/1/3/2/7/132712358/4986741.pdfIn PDF document text
    • http://files.wangmoney.biz/uploads/1/3/1/3/131398334/3e662942f6a5e0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2051/7537/files/65202742227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/what_is_polarity_in_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/81139104565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/daxatotemutebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9259/files/lg_chiller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/63179361318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4344/5141/files/the_emerald_tablets_of_thoth_the_atlantean_doreal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6156/5850/files/6939611879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/alzheimer_tratamiento_psicologico_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/42401299402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/arrancame_la_vida_libro_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7567/files/senisetatiwutonuvokewaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/semelavirisapotopol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/zagagovitisiwe.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5236 bytes
SHA-256: 5c79014e23520120a12e8a00f9e036d4edddebb1c5e35f398544e84f7357a9f0
font_01_sfnt_off00007803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7803 10088 bytes
SHA-256: 2b40bd2f2e109c427d34c168bc3a45de15a301134beff0fef87e45a4aa08a9a9
font_02_sfnt_off00009a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176