Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a674cd4dbe8e34…

MALICIOUS

PDF

40.6 KB Created: 2020-09-29 19:50:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58c4ea9ea64cb450fd4a4d1365e7b715 SHA-1: 6764e914c02efc76e7e10f2b69cbe6480bff3776 SHA-256: f9a674cd4dbe8e34639efe35577d7da65691496102cb450d853a1363c3dcd10d
124 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The embedded document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the document's purpose is to lure the user to the malicious site, likely for phishing or malware distribution. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/strik?keyword=biometria+hematica+para+que+sirve+pdf In PDF document text
    • https://site-1036972.mozfiles.com/files/1036972/tunazozidomigubiwojajo.pdfIn PDF document text
    • https://site-1037245.mozfiles.com/files/1037245/51769554654.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/79682714386.pdfIn PDF document text
    • https://site-1036635.mozfiles.com/files/1036635/23938297584.pdfIn PDF document text
    • http://nowevijuk.brew-tech.org/uploads/1/3/1/4/131437421/jubof.pdfIn PDF document text
    • http://roxize.brianakenno.com/uploads/1/3/0/7/130776298/488823.pdfIn PDF document text
    • http://files.lindseyiler.com/uploads/1/3/1/6/131637131/3868926.pdfIn PDF document text
    • http://kowuri.baan-amorn.com/uploads/1/3/0/8/130814526/tevobikigewiwemanag.pdfIn PDF document text
    • http://files.valiquet.com/uploads/1/3/1/3/131379706/xofowow-zegoronedeza.pdfIn PDF document text
    • https://site-1036910.mozfiles.com/files/1036910/mogewiwagugogisudoxe.pdfIn PDF document text
    • https://site-1037829.mozfiles.com/files/1037829/boropesanefeguritudawak.pdfIn PDF document text
    • https://site-1036626.mozfiles.com/files/1036626/38698710612.pdfIn PDF document text
    • https://site-1037073.mozfiles.com/files/1037073/gevajurefeguxidu.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/1/0429/3532/0735/files/soal_sbmptn_matematika_dasar_dan_pembahasan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/11743843192.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 8

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_off00005cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC8 5596 bytes
SHA-256: 946572f5c37c1698176831b1b588b2d74bd1fcea258d72f5da0c574935d123af
font_01_sfnt_off00006fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA7 11240 bytes
SHA-256: 9369d46324a2144da8ad6173cf069fdcc7d62629d79da31a33fc130f31799d60

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