Malicious PDF — malware analysis report

Static analysis result for SHA-256 a01c964cc6c67a57…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 13:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e50dc2011c1e1744d1ed93ad3a870cc1 SHA-1: f9df9a48a1e55925748c8f8355cc174faad03317 SHA-256: a01c964cc6c67a57c39d90603315f883356de7453e20d3539ab7b644cbb82026
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, indicative of a link farm or SEO manipulation tactic. One of the primary links points to a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of outbound links suggests an attempt to either distribute further malicious content or engage in SEO abuse.

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.com/pify?keyword=lagu+adrenaline+mob+indifferent In PDF document text
    • http://files.joeybelleboutique.com/uploads/1/3/2/6/132682802/reraxidopanare.pdfIn PDF document text
    • http://gepexuxo.larrymcd.com/uploads/1/3/1/1/131164250/mopila.pdfIn PDF document text
    • http://files.kimtarrestaurant.com/uploads/1/3/1/3/131380889/7091993.pdfIn PDF document text
    • http://files.rodeoqueenofhearts.shop/uploads/1/3/0/7/130776490/4564493.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/1/0432/0110/1984/files/disaster_recovery_plan_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9179/5875/files/3._3._5_resto_druid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/capital_structure_planning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1590/files/sijizejad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/dieta_cetogenica_y_cancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3233/6791/files/pitafidozid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5888/files/19146830850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6694/7744/files/medical_certificate_for_student_absence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/tubuxisitelusudibudutido.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000549b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x549B 5132 bytes
SHA-256: 012e137a7e0bb6c00b993d57cd93aa43f1c462892ef14f780c34ab48d6511c99
font_01_sfnt_off000065f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F4 10264 bytes
SHA-256: 25a95a343a94b605cbe9e1ec812e55d78936f8065dc69c2e6ca931aeb5421021
font_02_sfnt_off00008952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8952 16436 bytes
SHA-256: 1ec37582cecf54d95bf24fa6aa36033ded98307c94891c6a55762556d7acd00c

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