Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59a4e6f396a6b53…

MALICIOUS

PDF

48.6 KB Created: 2020-08-30 21:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bd55b8ff455c0d19d4153cc95103fea SHA-1: cf773955201a7375b8685c7c909945a8d0d8bee6 SHA-256: b59a4e6f396a6b5380386ace5b0c60034f64ae04944677eb81cc969a8d01de51
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a movie title ('Bajo la misma estrella') and the URL itself also references this title, suggesting a lure to download content. The presence of a link farm heuristic further indicates a malicious intent to redirect users to external sites.

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.ru/wix?keyword=bajo+la+misma+estrella+descargar+latino In 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/1/0439/0027/2792/files/81215008939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/financial_projections_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/wolivalakup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/zejanogerufogojajew.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3826db_76991ba2436a4a028a90166553227f55.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/79240360588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_258a96fa30bd41219800a6511a5ec1bc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b85eb0_2bb31401fa134b59a3edde20d181a714.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_20120a4b11384d389bb93c1fe5809df7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d7d4c758886f40a9b6d0af59fc2fe025.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e5412a_319ad82e8cc045afb9549a24dd433a82.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5631 4992 bytes
SHA-256: 67728a8398129a17189676d0da46933a071eafec030196516b0edec77de9dad8
font_01_sfnt_off0000676a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676A 5384 bytes
SHA-256: 9f173e29cb267041fcee8d6b182acb394ea59ce79087753ef6b5337d467b2797
font_02_sfnt_off000079a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A5 11124 bytes
SHA-256: 0f64adf7af1b6b468c8a22debbb390bb57c13a70fe434241f594891bbce5ee76
font_03_sfnt_off00009e3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3B 16096 bytes
SHA-256: 2fa4f296fe9e38b1bea2264e65e06c45fbbf4edfcb32b68fd436b1108ab95b01

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