Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d6039db2c43b780…

MALICIOUS

PDF

79.8 KB Created: 2021-03-15 20:31:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 32fd1e5a2932265ae9d95a3b1e3ef86c SHA-1: c6ba93dbed0eea3aa468514d43cf7333d9e7f90d SHA-256: 9d6039db2c43b7809adb7983b13b09cdb81be3d6409f0f8038f9fb90c1ec943d
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that point to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a common phishing lure, likely intended to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=star+trek+the+next+generation+writers+directors+guide+pdf In PDF document text
    • https://cdn.sqhk.co/gabamulijawe/fOig3ji/angry_crab_shack_phoenix_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/T8jhTRL/gefusikixezunuvanede.pdfIn PDF document text
    • http://899themes-demo.ru/485236346116y4oy.pdfIn PDF document text
    • http://copyrighthelpptteam.com/61785445562z7oxl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414678/normal_5fcee100259ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_601c9dd236b97.pdfIn PDF document text
    • http://zujakupuk.22web.org/white_chiffon_blouse_formal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_601f7777bbd3b.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/ijgOvhb/wd_my_cloud_home_admin_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423772/normal_6027baa1e7264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_6011192736fbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470024/normal_5fd8859523d61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422368/normal_604204384040f.pdfIn PDF document text
    • http://rozefuzapotor.iblogger.org/65580380695.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/ggPihKL/idle_battles_heroes_vs_zombies_hack.pdfIn PDF document text
    • http://boomerangoo.site/531440186890mdnl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_3e6abfffb11f488d92c3d2b637f96f15.pdf?index=trueIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_8bae8c25e01a45359cb078f5aea4a50f.pdf?index=trueIn PDF document text
    • https://314f4944-3dd9-45af-b5ee-fc7f46c963e4.filesusr.com/ugd/73cb9e_a052a0ebcf37488b8e987a516eea638d.pdf?index=trueIn PDF document text
    • http://xidatozekef.epizy.com/chefman_air_fryer_instruction_manual.pdfIn PDF document text
    • http://nejatunopux.epizy.com/past_and_present_tense_words.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E2 5712 bytes
SHA-256: 95c51bd06cd32963295b8014ab4b131fc15d48dc8a769bdcd172037a52525a01
font_01_sfnt_off00010a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6E 11860 bytes
SHA-256: 1bfd1638a233331059c6db6c65cffe8c6a3e40f6c6608439c8a3aa87539a673e

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