Malicious PDF — malware analysis report

Static analysis result for SHA-256 be146e7d066f5bf6…

MALICIOUS

PDF

57.4 KB Created: 2020-08-11 16:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4bca1e3d3320586d843d92c6ad41342 SHA-1: 97c986ffe65bb86d5a49d3e6935df2725c920920 SHA-256: be146e7d066f5bf6e3320e51a787c12a384828d8922a86b86d0681ab66f4a39d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to Shopify-hosted PDF files, indicating a link farm. One of the embedded links, 'https://ttraff.cc/wb?keyword=organic%20chemistry%20alkanes%20pdf', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and appears to contain the malicious redirector URL.

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/wb?keyword=organic%20chemistry%20alkanes%20pdf In PDF document text
    • http://files.hannaryynanen.com/uploads/1/3/1/0/131070938/wezolawef.pdfIn PDF document text
    • http://gunititu.hanshi.com/uploads/1/3/0/7/130776031/9299703.pdfIn PDF document text
    • http://tamoguro.brindafinearts.com/uploads/1/3/1/6/131606490/01d82d1ae6020.pdfIn PDF document text
    • http://vugagunaw.rydersquash.com/uploads/1/3/1/6/131636612/8656619.pdfIn PDF document text
    • http://files.bloorstreetsound.com/uploads/1/3/1/4/131438137/5628264.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/1/0429/1395/6006/files/60026954112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9799/4904/files/intranet_et_extranet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22271122494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/busixokutijebifobuvef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/borufati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4301/9159/files/bending_moment_formulas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5643/8165/files/20930484640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/setting_up_dash_button.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/87970379424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6837/files/53167960365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1356/files/bikomovojaboz.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_off0000a14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA14F 5760 bytes
SHA-256: b4a75e790bf3c62028328b828d6173bdc44f8d546bd9949891b1c2283da2ac46
font_01_sfnt_off0000b4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C6 10432 bytes
SHA-256: 36a9033be01ae44728cba921d0980bdba2b08c41e3899a8f6dbccb4ed9bc6da3

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