Malicious PDF — malware analysis report

Static analysis result for SHA-256 139e9eefbaa043f9…

MALICIOUS

PDF

333.9 KB Created: 2020-08-20 21:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac7a0e755ed892d47b16d72355948d91 SHA-1: f6458a191a35e63dd2a13a42f5b134357503c310 SHA-256: 139e9eefbaa043f96e5db1b4c37cef7485de40115655e9b4b22ed0e026b45e43
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified by heuristics as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

Heuristics 4

  • 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.
  • 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=guide+tristana+top In PDF document text
    • http://files.lindsayvickery.com/uploads/1/3/1/3/131380213/papujile-gugapuzugajenif-bugilaruxipubes.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/1/0430/6052/7265/files/zesukumukebiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0062/7363/files/dadeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/git_commands_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/rabixusegujil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7028/2142/files/litapupapifikuxebexexopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/movetetadiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/fugaritofenoxebezajesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/armadura_de_dios_para_nios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8107/0747/files/annulment_of_marriage_in_florida_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/affirmative_and_negative_sentences_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/92361456574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/bilabafufarokari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8506/9477/files/campbell_biology_in_focus_ap_edition_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0211/6772/files/89610480041.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 3

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_off0004e1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E1D3 4952 bytes
SHA-256: 33ed6a99de6e6c43d3ba6268aa8fffc11285f9902f11115531b9469241fbf241
font_01_sfnt_off0004f2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2B6 17088 bytes
SHA-256: c488bdf34275d839a8335d0276fb628cf0c778bcd60b50a1f030c6442e34779a

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