Malicious PDF — malware analysis report

Static analysis result for SHA-256 01861ca8b96ff5d6…

MALICIOUS

PDF

40.5 KB Created: 2020-10-27 06:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: 4ba44ddc566537ca90b0ad30a0947bf4 SHA-1: a3bcc8e8c6b3a2d89c4c495a48d11ef86395701e SHA-256: 01861ca8b96ff5d6e5eced00a01660f512a4378f607801d538843fadef06af23
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/123?keyword=creating+magic+items+3.5 In PDF document text
    • https://s3.amazonaws.com/pexodugosa/bachon_ki_kahaniyan_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/lexifogogisowolotiputo.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/66052128950.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/liguwodosimefet-fexamadora-fomubidotoje-buzeraxif.pdfIn PDF document text
    • https://liletizotefos.weebly.com/uploads/1/3/4/2/134234842/fulofali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376359/normal_5f8b60747bf13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378153/normal_5f8a5156e11ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f8f56956e353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f9575cecc33e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_5f92e82f1d975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412762/normal_5f94c0f4ee73a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000602b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000602b.bin)
    • https://cdn.shopify.com/s/files/1/0495/5232/6823/files/crescent_hotel_dallas_phone_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7847/8743/files/kingroot_4.4_2_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2431/8103/files/rajidefodixobenewavomiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/infamous_1_ps3_trophy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5285/1111/files/exponent_word_in_english.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 extracted file (font_00_sfnt_off0000602b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602B 5312 bytes
SHA-256: 7c462a2c72eb0f3f63fb70b9d3e55bd4d6dec23a0085c5c9bae5f106e8a5c13f
font_01_sfnt_off00007229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7229 10412 bytes
SHA-256: 43f8de5f3ac27ddb11768524684c7d9af6c37bcb147612e714d850acf61fd45f