Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cad768c4675fcf…

MALICIOUS

PDF

72.2 KB Created: 2021-03-20 23:53:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: f0edf35b6f2d5374404d5b707859f43f SHA-1: 670775d334de7d8669cd676a885ba6c6f32e458a SHA-256: 14cad768c4675fcf7924b14990d3df6a90b4ca5c42a90d309246c9b4581d13c5
244 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to disposable hosting and one specifically to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Ps3 remote control instructions', suggesting a lure for phishing or a scam. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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 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.
  • 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://dafemum.ru/strik?utm_term=ps3+remote+control+instructions In PDF document text
    • http://moxilekulina.getenjoyment.net/64371569615.pdfIn PDF document text
    • http://rapegutuxipik.22web.org/sq_11_mini_dv_camera_price_in_pakistan.pdfIn PDF document text
    • http://fezatubiwe.getenjoyment.net/41586547008.pdfIn PDF document text
    • http://ruwexonofedu.iblogger.org/75193200368.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/sennheiser_ew_100_g4-me2_835-s_combo.pdfIn PDF document text
    • http://kiviramezu.22web.org/dodge_durango_towing_capacity.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://divogidiguxofib.epizy.com/icse_board_full_form.pdfIn PDF document text
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_a1f3562d1f924c84a106cd58e13e28d8.pdf?index=trueIn PDF document text
    • http://lojibovel.myartsonline.com/antilogarithm_download.pdfIn PDF document text
    • https://aca292c6-a3ee-4c96-b4c9-db15c8eca1b9.filesusr.com/ugd/cd1d52_b3e83b75f5d44063b53bfeed6f7f5f56.pdf?index=trueIn PDF document text
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_5419150f4f59415f98a6d7dbd3c4e885.pdf?index=trueIn PDF document text
    • http://pagujuropiwadiv.rf.gd/fivemevegofobowizimuw.pdfIn PDF document text
    • http://fexojuvaf.rf.gd/nuzolatalirorujox.pdfIn PDF document text
    • http://komoridetunitiw.epizy.com/75093081190.pdfIn PDF document text
    • https://a9750898-a066-404d-a796-54a2f5ad13bb.filesusr.com/ugd/60231a_a4cf662938b247059077e8603a604f85.pdf?index=trueIn PDF document text
    • http://todizegi.epizy.com/92517062720.pdfIn PDF document text
    • https://e590c0d9-b694-44fb-9862-47327b30d8b0.filesusr.com/ugd/89363e_35dc9af8c66a4b4c944c63cd1ee52b62.pdf?index=trueIn PDF document text
    • http://tewejoboxegasu.epizy.com/samsung_wa48h7400aw_aa_recall.pdfIn PDF document text
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_e12d5f8ee78c405bb86262ab3e743fa8.pdf?index=trueIn PDF document text
    • https://ff999131-262c-4f46-aa1e-84c50d3d9e43.filesusr.com/ugd/a474dd_26233111177244c5968b715f61ff8e49.pdf?index=trueIn PDF document text
    • https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_d8b46a766cd642649ebca9600cb5c558.pdf?index=trueIn PDF document text
    • https://438e95ed-c264-4db5-88d3-1a9ca8b91b86.filesusr.com/ugd/733c1f_4c07c68e98ee4ca492d3f668b97ada0e.pdf?index=trueIn PDF document text
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_92211b210edc4f1fafda56a03725d805.pdf?index=trueIn PDF document text
    • http://pavinudoj.epizy.com/rupovix.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_off0000df6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6B 4900 bytes
SHA-256: 6efbb25cbf683cb84853216364487d1d485fdab6972ec63bbb2fb6cb8c0062d7
font_01_sfnt_off0000f000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF000 10224 bytes
SHA-256: 98484716fd055be52a210b53af0dac926e4aacd485c64e6bfbbeace4877ae100

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