Malicious PDF — malware analysis report

Static analysis result for SHA-256 138f461b7097d146…

MALICIOUS

PDF

47.3 KB Created: 2020-08-06 19:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6444517496712e2be6f0f8870b17b884 SHA-1: 65c18195dff53dd798aeb45d3446e8e8202b39af SHA-256: 138f461b7097d1464dae01c9b3baf470413085e46547f234b67b9ec0aace5902
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a redirector service (https://ttraff.cc/pify?keyword=hannah+arendt+eichmann+em+jerusal%25C3%25A9m+pdf). The document body also contains this URL, suggesting the primary purpose is to redirect users to potentially malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.

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=hannah+arendt+eichmann+em+jerusal%25C3%25A9m+pdf In PDF document text
    • http://files.iaweworks.org/uploads/1/3/1/3/131381675/rinokanudofowusupevu.pdfIn PDF document text
    • http://files.empowerptandwellness.com/uploads/1/3/0/8/130874169/nuvin_bakobalowelex.pdfIn PDF document text
    • http://files.newellbooks.com/uploads/1/3/0/8/130813797/vapujulo_rajeker_vewidufe.pdfIn PDF document text
    • http://files.food4good.org/uploads/1/3/0/7/130775679/tosagipakin.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/1/0429/0763/1783/files/67567684695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2525/0974/files/purified_water_generation_system_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/18262412507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/35000962649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/nirosekabapoxuril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/letifelopibed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/78014739221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8547/7541/files/82908416504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/sufasurenupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8363/6644/files/93567088251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/wevel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/force_quit_bluetooth_mac.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_off00007664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7664 5576 bytes
SHA-256: ad898bb93d81555cc586e7dd7f58a47f003b0c53b272655df7861d1d171c4909
font_01_sfnt_off000088ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EC 11316 bytes
SHA-256: 692cf9957a5c9a5f590678b8a5a1636ec1120be3c94de79bb0e46851dbe1c458

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